I don’t think people generally who spend many 1000s a year on upgrades alone are the type concerned with thinking about the well being of strangers. But I could be wrong. When I read the comments on the post of how-do-you-stop-house-guest-from-damaging-your-speakers, I seriously thought that some of the members here are pretty scary, narcissistic and antisocial - not in a good way.
I am not sure how you came up with your hypothesis, but how would one's hobbies influence whether they have philanthropic tendencies or not?
Do you have the same hypothesis about people with large expensive watch collations? Or people with their own wine cellars and wine collections? Or people with car collections?
My cousin is quite rich, and has a fairly extreme high end system. He also made some pretty expensive upgrades to his system. And I know for a fact he is a very generous philanthropist. His audio hobby has no effect on his donating.