Whilst I can't agree with the business about DJ's I think he may have a point about the rest.
I'd be interested to hear of any songs or albums since 1995 that will be remembered in twenty years time in the same way as Free's 'All Right Now' or Clapton's 'Layla' is now. Will these always be the standard's?
I'm finding it hard to think of anything that will be remembered like that since perhaps Nirvana's Nevermind.