At least Bowie never considered himself a warlock like Jimmy Page.
The 70's was the age of rock decadence kicked off by The Stones Tour in 1972. After that it was all about partying on private jets and getting the youngest pussy one could find. Most of the rock stars had high powered lawyers to make sure the statutory rape charges never saw the public eye. Gary Glitter continued with the lifestyle and got arrested in Thailand.
At around the making of
Houses of the Holy, Jimmy Page got it into his head that he was Aleister Crowley. Crowley was the forerunner of Scientology, he considered himself a warlock but chickened out when it came to the virgin sacrifice...the thought of swinging from his neck until dead was unappealing to him. Page wanted virgin blood with the youngest groupies, like Crowley before him, he couldn't seal the deal. It would have been beyond Peter Grant to fix.
Even OZZY told Page he was being an asshole. I looked at the lyrics to the song, Ozzy didn't believe.