Paizo realized that 3.5 wasn't worth giving up on and they have continued to support it through an open license method (which is basically 3.5 D&D without some monsters and some spell names changed and some small rules changes and a different take on certain classes/races)
They managed to make a homebrew 3.5 and make money out of it, meanwhile WOTC pushed 4e, it failed, they are now trying to back pedal and get a revised 3e/3.5e running with 5e
So, all you are saying is "I liked the changes Paizo made. I don't like the changes WOTC made."
Originally you said that WOTC just made a homebrew of an existing system which is why no one was excited about it. You just said Paizo made a homebrew of an existing system and that's why they succeeded.
I don't think it's about whether something is a "homebrew of an existing system" or not. WOTC just made some changes to the game that some people don't like.
The crux of my point is that WOTC could have done this, kept fans happy and made money.
Instead they wanted to push their minis and develop their boardgame (aka hasbro influence play) business
This isn't true at all. They made the changes they did at the encouragement of a large group of their players. A group I was part of which mostly consisted of Living Greyhawk players, convention players, and people who liked standardization and were tired of the lack of balance in 3.5e
You miss the part where a large number of fans DID like 4e and it sold pretty well. I understand that you like Paizo and Pathfinder. However, saying that WOTC made a huge mistake by changing the game at all simply isn't true. Things need to change from time to time. It's always best to strive to make things better. Even if you fail now and then.
D&D didnt need to change, it worked perfectly fine with just some tuning and this is all proved by reverting back to a rebadged 3.5 system with revisions
Edition warring aside, different people like different things. Whether D&D needed to change or not is heavily based on opinion.
However, 5e is not a rebadged 3.5 system by any means. It shares almost an equal number of things in common with 2e as it does with 3.5e. If anything, this is a game that went back to 2e and iterated from there while using some good ideas from 3.5e(feats, multiclassing, and attack bonuses going up) and some good ideas from 4e("Healing Surges", Encounter powers, balanced monster math), with a bunch of its own innovations.
This isn't a system designed to bring back people who liked 3.5e. It's a system for people who felt D&D kind of got off track in both 3.5e AND 4e.