No, he wasn't. Marx was about the state owning the means of production, and that isn't the case here. We have a handful of super rich people (oligarchs) owning the means of production.
Marx was about something else, mostly. You should probably read a bit more of (or on) him.
Mmmm, maybe you need to refresh your understanding of Marx. This oligarchy was well described by Marx, what you're saying he 'was about' was his solution to said problem.