I think there are a few reasons for this. The primary one is that it's a visible signal, and people make attribution errors almost constantly so it gets fixated

I think there are a few reasons for this. The primary one is that it's a visible signal, and people make attribution errors almost constantly so it gets fixated on. I think the other reason might be that it's unpopular (and not actionable) to say "this company succeeded because the people there are better than you" or "this company had great product market fit, and the employees efforts really didn't make the difference"