The worst of any group is generally the one the opposition singles out to use to tar all of them with the same brush. It's some more of that marketing crap which all comes down to spouting bullE36 M3 to achieve a desired result. Me, I don't think I could sleep well knowing I was a purveyor of bullE36 M3.
About capitalism vs. socialism:
Capitalism is where one is paid (that's called 'profit') for performing a service or providing for a need or want. While it can certainly be abused by the worst practicioners, it does more to bring out the hard worker in people. Of course it's based in self interest, after all self preservation is one of the strongest of human instinct urges.
Some will be better at capitalism than others. That's merely a reflection of society as a whole; black, white and all sorts of shades of gray in between.
OTOH, socialism (which is what the worst of the left espouses as a lofty ideal) is designed to make all equal, i.e. everyone is the same shade of gray. While this appears to be a lofty ideal at first glance, in reality it crushes the best of the human spirit by removing opportunity.
So which one would I rather live with? Give me the opportunity to better myself. If I blow it, it's no one's fault but mine.