What do you think about Marxism?

I’m a Capitalist supporter, not a Marxist. But I’ve heard the Marxist perspective on Market Socialism, so I’d be curious to hear the Market Socialist perspective on Marxism.

Marxists generally regard Market Socialism as only socialism if all businesses are owned equally by society, or sometimes as not “real” socialism at all. Some Marxists like Roemer are advocates of Market Socialism, but not as the end goal. I’d be curious how you guys feel about this too.