Franchise fatigue is a huge reason. People were tired Trek by the time Enterprise came out.
RIP Gene Wilder. One of the funniest people of all time. RIP Matt Roberts. You were great.

The cancellation Of ENT was largely due to a new management at UPN around 2000/01 the former management was a strong believer in Trek despite the dwindling ratings from DS9 on it believed in the show and gave it it's time to find it's way with each instalment after TNG that premise applied for most of DS9's and VOY's run.With ENT all that changed with a new board who wasn't into Trek and somehow resented Trek for the freedom it had previously and they started to mess thing up during it's production and run.
Also franchise fatigue plays large part in the cancellation of ENT,even Berman and Braga begged the board to wait a couple of years before launching a new Trek series(they managed to postpone the release because it was initially planned to start during the last season of VOY).

I'm pretty sure a read it heard somewhere, that the TNG cast was signed on for 8 seasons, and were quite shocked Season 7 ended up being the last.
RIP Gene Wilder. One of the funniest people of all time. RIP Matt Roberts. You were great.

I think most of the actors signed for 5 or 6 years and then an extension for one or two more.
While with TNG there was a desire to go to movies, on DS9 and
Voyager
the ratings tended to slide downward or at least not improve each year; even with the decline the ratings were still good for, respectively, syndication and a netlet, but the writers probably knew that they couldn't and shouldn't go too long, their budgets could be reduced and they could run lower on ideas, and with
Voyager
there was the hope that
Enterprise
would somehow be more popular.

If only. 10 Seasons would've surpassed the 200 episode mark. Would've been very impressive. Even 8 Seasons might've done that.
RIP Matt Roberts. You were great.

From what I read somewhere that all the cast where ready to continue for an 8th Season except for Patrick Stewart.
At some point early during production of Season 7 Paramount wanted to kick start a TNG film after again rejecting the Star Trek Academy film idea.
TNG ratings were doing really well even on the seventh season if Paramount didn't push for the films we might have ended up with 10 seasons of TNG.

I'm aware of that. So was Ds9. I wonder what had higher ratings between those three shows?
RIP Matt Roberts. You were great.

DS9 had every genre series of the 90s on its tail. hercules and Xena.
TNG was in syndication. it wasn't aired on NBC or ABC or CBS

What do you mean better competition? Cause Next Gen was up against Cheers, The Cosby Show, the first few seasons of Seinfeld, The Golden Girls, Wonder Years. Some of the most popular, successful shows of all time.
RIP Matt Roberts. You were great.

Based on ratings then YES but it def had way more competition then TNG did at the time. And i'm sure Paramount were still milking way more then they put into the show, despite the ratings not being as high as TNG.

Oh please, PLEASE, don't start that up again.
Jake Meridius Conhale, at your service!
"Old Man" of the BSG (RDM) boards.

Based on the ratings, DS9 probably could've been cancelled after 5 seasons too. Good thing it was syndicated.
RIP Matt Roberts. You were great.

Voyager should have ended at 5 seasons for sure
I'm sure it made sense for ds9 to end at season 7 though i'd love to have seen an 8th season.

Has she been nude anywhere?
X-Men: Apocalypse 8/10. TMNT: Out of the Shadows 9/10. RIP Doris Roberts. You were wonderful in ELR.

Envisioning a 7 year run for any series seems incredibly problematic.
Seven of Nine.
Any coincidence?
(Then again, showing two more seasons of nothing more than Jeri Ryan's spectacular breasts would be better than a lot of shows airing on tv!!!)

As I understand it, budget.
Each season, the actors either receive or negotiate a pay raise, over time, this becomes a larger portion of the budget and eventually becomes unfeasible to maintain. (more to the actors, less to actual production)
This was a major issue with Stargate:SG-1. The original plan was to end SG-1 with O'Neill's departure and start a sequel series called Stargate:Command. This would introduce the new characters and more political feel of the show while simultaneously resetting the actor's pay grades. This ultimately didn't happen and I think to the franchise's hindrance, as it would have also allowed the series to welcome new viewers who didn't want to slog through the previous 8 seasons just to get up to speed.
Jake Meridius Conhale, at your service!
"Old Man" of the BSG (RDM) boards.

And DS9, Nex. People seem to like it now, but it's not like it was setting the world on fire like TNG was.
X-Men: Apocalypse 8/10. TMNT: Out of the Shadows 9/10. RIP Doris Roberts. You were wonderful in ELR.

Because of the bible it says there will be seven fat years and then seven meagre years so they had the fat years with TNG and they were not going to risk for seven meagre years with Star Trek until they released VOY.

Wouldn't have worked. TNG was syndicated. Voyager was going to be the anchor show for the new UPN network.
Over 20,001 Tacos ReturnedAS GARBAGE!

I was just going to watch one of the movies but my stupid DVD player ducks. I have to get a new one ASAP.
I was going to watch some of season 3, but I put the disc in and realized that instill remembered the episodes too well.
I guess I have to stay with Don Matteo for a few more years.
"It's One Nation Under GOD"
not allah,wake up people.

He probably bumped it up a star.
X-Men: Apocalypse 8/10. TMNT: Out of the Shadows 9/10. RIP Doris Roberts. You were wonderful in ELR.

I'm guessing the studio was ST mad in the early 90s and wished to continue the dominance (whether it be films or spin-offs).
Good decision for them to have included Worf on ds9

Well, they could've postponed VOY. TNG was still very popular. I would've rather seen an 8th season of TNG than the movies.
X-Men: Apocalypse 8/10. TMNT: Out of the Shadows 9/10. RIP Doris Roberts. You were wonderful in ELR.

Smart thinking on their part.