No, you've just described the NFL. No matter how bad a team sucks, they all get an equal share of TV revenue.
If you suck in the EPL, you get relegated to a lower division the next season.
No.
Don’t confuse rules of real sports with the financial arrangements of sporting bodies. You’re lumping two separate issues together.
They are all part of the NFL. They have privately come together to determine they wanted revenue sharing that they have. I suspect it’s to ensure the stability of teams and franchises. There are some markets that innately have higher earning power than others and if they want to enter into such a sharing arrangement, then in a capitalist society they certainly can. Keeping the smaller market teams around by revenue sharing has been decided by the NFL to be a benefit to the entire league, not just to the small teams. If it didn’t make business sense it would not have been done.
But it is not the same thing as sportsmanship and why something is a real sport versus soccer.