The Beatles only put out albums from 1963 to 1970 and look at the impact. Though to be honest, their songs are for the most part fairly simplisitic when compared to Zepplin or Floyd.
It's that 'simplicity' that stands the test of time. Where is all the bloated prog rock of the '70s today?
only U2 has put out meaningful music since day 1 till the present.
Arguable.
I do not think that the Who should be on the list.
I would support inclusion of the Eagles and Aerosmith.
You're joking right? Eagles and Aerosmith over The Who?
The Who were ground-breaking and pioneering, and defined British Invasion as much the Beatles or Stones. If now absent from our collective conscious it's largely because they effectively disbanded in 1982 and haven't released anything new since, unlike other acts that should have disbanded long ago.
The Who's influence is felt across the spectrum, in early/present-day punk, alternative, and most every band that falls into the 'power-pop' genre. (Clash, Smithereens, Pearl Jam, Nirvana, Green Day, etc etc. are all Who-inspired). Zeppelin's influence, while the most obviously felt, is manifested in some of the worst music ever recorded (pretentious heavy-metal anyone?).
Aerosmith themselves are highly derivative (Zeppelin, Stones), and the Eagles part of a mid-70s California scene hardly relevant today.