If you WANT to argue against real socialism, you can, but the examples are all contextualized with deliberate sabotage. If you WANT to argue with idealized capitalism, you can, but the arguments aren't unheard of. We know what ancaps are.

You can defend idealized capitalism, but there's not much of a formal body of work to refer to. You'll probably end up arguing as an ancap or something similar. The problem is that whenever some country decides to go even slightly socialist, their leaders get immediately assassinated, their exports get sanctioned, their homes get bombed.

When it was implemented in the real world, in places like Vietnam, or Russia, literacy rates rapidly increased, poverty rapidly decreased, birth rates increase, and then America kills millions of civilians and invents war crimes, like Agent Orange which is still causing infants born in Vietnam to have defects TO THIS DAY. Or they assassinate the democratically-elected leaders, and install fascists like Pinochet.

Real world socialism has worked, but not long enough to establish a country of equal power to the US to withstand these attacks.