Football is now just like formula 1... They're shifting towards a world club/super league in the future I think, which will be a closed shop like nfl.
The conditioning has already started with the club world cup... Whether we like it or not the yanks love it and they'll get their way. Contrary to popular belief, I think the super league would sadly work. They'll all pay to watch it at the end of the day and they'll pay lots.
The fans of the **** clubs left out will still watch the PL and follow their clubs. It'll just not big be the same glossy PL. It'll be the new fizzy, they'll still think something can happen for them, but it won't, they'll still want to stay in it and celebrate the occasional low block draw vs the big 6 clubs.
It might take a few decades, but that's where football will end up I think. You'd have to be really naive to think it won't at some point in some form.