The tech billionaires hate free markets. It's a threat to their monopolies. It's doesn't even matter if they might be richer under a free market. They want power. Communism and left-wing ideology is designed to get people people to join the cause based on lies that it will make them better off. It won't. It will simply install rulers over them and everyone else. Rank and file communists (basically where all left-leaning arguments end up) are useful idiots for their masters who care NOTHING about communism or liberal policies except as a means to control and dominate everyone and everything they possibly can.
Libertarians get pissed off at the rank and file commies because they're contributing to our mutual destruction, but I am sure most of us don't view them as evil, just completely and utterly misguided. It's like dealing with children who never grew up and are still looking for mommy and daddy (insert government officials) to protect them from the big bad world (businessmen who just want to sell them products and services on a voluntary basis).
Explaining these concepts to a physical adult is completely useless except as entertainment. The important thing is to educate the kids and resist the adult commies.
*** - I am not calling anyone here an idiot (at least not in this post). Useful idiot is just a term for people supporting a cause where the end result will be the opposite of what they are going for, because they have bought into the rhetoric.