And most still have a backline rig. Fact.
(we're still talking rock&roll right? good)
Most bands are still using tube amps but alot of them are not running DI's into the PA's, like I said most bands with walls of cabs are dummies unless your Yngwie. I know some session guys in Nashville when they play live, they will play with some sort of modeler in a club so they won't have to haul their amps. But at the end of the day is all preference.