My "off the top o'me head" would be that your left-wing friends find hierarchies stifling and think outside the box, so they ended up starting their own businesses not to be self-reliant or to make a better living, but to retain their sanity and self-respect. Your right-wing friends find it easier to conform and to operate within a hierarchy and don't question received wisdom, so why should they feel uncomfortable forking for someone else?

tens of millions of people stand to see their lives ruined because the bureaucrats at the ECB don't understand introductory economics -- Dean Baker