Sargon had a similar comment recently. To summarize, he said that Marx's criticisms of liberalism are correct and that liberals have no answer to it, other than to handwave the criticisms away. Of course, Marx's solution of the worker's revolution is stupid and unworkable.

I've heard from someone (don't remember who) that fascism is "late stage socialism". People turn to it once they realize that socialism's economic system doesn't actually work. And I can think of a few examples of that. A lot of early socialists became fascists in Italy and Germany in the early 20th century. And China's modern system is the textbook definition of fascism, even if they still pretend to be communist.

All of that is to say that Marx (and others) correctly identify liberalism's problems. Just that socialism does not represent a workable solution.