"The logic is simple: when music industry firms are struggling to stay afloat, they don't want to take any risks on new or crazy sounding music. Once they've recovered and joined the next round of irrational exuberance, though, then they're all in favor of promoting the next big thing." 
 
This doesn't work for the UK. The second-greatest pop era in the UK (punk, ska, New Wave, New Romantics-electropop etc.) ran from 1976 down the slope of a bad recession into about 1981-2. 
 
The 'rave' music of the recovery was much less distinguished.