If you look at any dance genre's (Drum n Bass, Breaks, Techno, Dubstep, Grime, House, whatever. I mean dance music that is actually aimed for clubs and dancing, not dance music in the vague 'anything electronic' sense), it still is a single orientated. Albums are definatly the exception, not the rule. Also, as previous people have said, albums weren't around at all before the 60's. So there's no reason why albums should be the standard.
That being said, I'm in no rush to see the death of the album. I think it's more likely that they'll simply become less ubiquitous, rather than stop altogether. Artists that still want to make albums will, but those aren't so bothered will feel less obligated to.