The game's money and audience is mostly in Europe. South America has a very large following but with considerably less cash swilling about.
Without UEFA then something like the World Cup looks a very weak prospect for FIFA especially in terms of marketing and sponsorship, brand association.
FIFA only seem to care about one thing and one thing only- money. Greed. If the only answer is to hit them in their wallet and hit them hard, then the solution is a UEFA boycott, drastic as that seems.
I guess they dont want change