Bathory and Sabbath vs. Those They Influenced

Yeah, it's never a given that liking one automates the liking of the other, but I'm sure it's feasible most of the time. Logically speaking, and from an on-line store perspective, I'm sure it's factors into any 'cross sell' algorithm when someone who buys, say, Wolf would probably also want to check out Iron Maiden.
 
thats like having to listen to the shitty Beatles and Elvis and the Rolling Stones because they started rock.. blah blah blah. I hate that shit. or the blues. I cant stand the blues. my dad loves the stuff, I just cant stand the chord progression and the drums, the vocals.