I know I can't believe that I wrote that - but we are now some 22 years into the next century and so far the Beatles, Rolling Stone, Led Zepplin, The Who, Bon Jovi, Van Halen, Earth Wind and Fire, The Who, U2 etc......are not walking (through that door or) up on to that stage.
As I sit here today, I can't think of 2 bands who have more hits this century than Maroon 5 and Nickleback. The scary thing is I don't think there are any other bands that are close (though possibly Destiny's Child except they had a lot of late 1990s music hits).
Music of the 21st century seems to be dominated by the solo artist, I don't know if that is going to change soon.
If I had to pick I would lean toward (yes, the hated) Nickleback as the greatest band of the 21st Century.
Anybody else to nominate?