And just for the record, Elvis didn’t write those hits. Jerry Lieber and Mike Stoller, Otis Blackwell, Aaron Schroeder, and other professional songwriters did the writing, and to his credit Elvis never took any credit himself as a songwriter.
As for the 70s, disco might have ruled the airwaves, but Pink Floyd, Led Zeppelin, The Rolling Stones, and the Grateful Dead filled the stadiums, and wrote their own songs, with some exceptions, which were always credited to the original artists (yes, Zeppelin did obfuscate the origins of few early blues quotes
), but mostly they created more than they copped. And those they “borrowed” were the blues songs they were inspired by.
And then there is Rush, which you either get or don’t, but definitely wrote ambitious and epic creations which were entirely their own.
But I digress. They definitely weren’t shills in any way. Anyhow, apologies for the rambling discourse on my favorite stuff. I do seem to recall the Cs mentioning Pink Floyd in a positive light at some point.