I have to say I've always felt like this with movies and games. Endings are usually weak or feel rushed.
I would say it would be hard to say Dragon Ball, Bleach and Naruto felt rushed =p ... Dragon Ball was supposed to end after the Tenkai Budokai against Piccolo (so less than half the way) then after Vegeta or at most Freeza, but it kept being pushed for more. Same thing happened with Bleach and Naruto, both would have been much better if ended on about 1/3 of the story.
For rushed my biggest deception is Shaman King. Also would love if Saint Seiya got their Zeus Arc in a timely manner right after Hades.
But yes anime suffer from a rock and the hard place problem. It either gets dragged because it is making to much success or is cut early because it isn't (and in several cases both happen, they start to pad and streatch the story and then have to rush the end).
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
Azzanation: "PS5 wouldn't sold out at launch without scalpers."