The folks who speak this way, if you asked them, “Was there any wrongdoing in the world before the first stock certificate was issued?”, would say “Of course there was!”
If you asked them, “Did pre-capitalist kings or judges ever favor the unjust over the just because the unjust gave them riches?”, they would say “Yes, they did!”
If you asked them, “In ancient times, were there rich and well-fed tribes, and poor and starveling tribes, and did the richer tribes lord over the poorer ones?”, they would say “Certainly.”
Which all goes to show, at some level they do know they’re not really talking about “capitalism” in the economic or historical sense. They’re not talking about an economic structure or a stage of Marxist history. They’re taking about wickedness, graft, injustice, abuse of power – things which are much, much older than capitalism.
They’re merely using their favorite snarl word instead of just saying “evil”.