>>Hint: look at Barça.
> What do you mean
This is a reference to the Barcelona teams built with basically unlimited budgets that have dominated the European Cup.
Of course, Qatar sort of does have a UEFA team called Manchester City via the state-run Qatar Airlines sponsorship. It has a basically unlimited budget and has dominated the English premier league for a while now (although it has struggled in European competition).
PSG and City are glorified marketing vessels for human rights abusing autocracies. Very different.
Another point: You can have the best team in the world, but it won't be the best team unless it plays against someone else (preferably many other teams). The game is interesting because the winner is uncertain. If the winner becomes certain at all times (or worse, all the rankings) then there is no reason to play the game anymore.
They definitely could not
>Hint: look at Barça.
What do you mean