I get that. But it's also important to acknowledge that they accomplished that by eliminating high level play.
Yes, in 4th Edition the numbers keep getting bigger. But the actual abilities that defined high level play in all previous editions of the game were simply removed.
4th Edition took a narrow range of the gameplay available in previous editions, called it the "sweet spot", and then spread it out over 30 levels. And, hey, if that was your one-and-only sweet spot, then that's fantastic.
If it wasn't, then you're screwed.
I haven't thought about it that way yet, that's a very good point.