Socialists aren’t “progressive” liberals. They’re socialists. We don’t think the problem is the billionaires: we think the problem is capitalism itself. It’s private ownership of the means of production, which is foundational to liberalism.

Plenty of good solid people have a business and pump the money back into their employees and community.

This is petit bourgeois “job creator” talk. Those good solid people exploit their employees’ labor. This isn’t a moral judgement, it’s simply how capitalism works.