What Happened to Classic Double Albms?

The Stones used to release albums based on how many tracks there were and what the running length was. A double album typically would be around 80 to 90 minutes long, a double alm. But now you're getting almost up to double album on a single disk. It's interesting that gigs don't last, or tend not, unless youare very, like, you know, it's a very expensive ticket, like a gig.