I can't believe people are being so short-sighted, this is not just a Man U thing.
In fact Glazer's takeover of Man U could have a worse effect on clubs like Leicester than it does for Man U.
Glazer wants to pull out of the collective Premiership TV arrangement, because he knows Man U would be worth far more by themselves than they get as part of the current deal. If he can do this (which I'm sure his expensive lawyers will be able to do), he'll make a big profit, but he'll also be able to put money into the Man U team to make sure they're still attractive to TV viewers, and keep making him more money.
But with the collective TV deal gone, the Liverpools, Arsenals etc will also do the same thing, leaving the 'less attractive' clubs to fend for themselves.
This will result in the gap between the haves and the have nots growing even bigger than it is now.