Internal monolouges enable structural inequalities and broken paradigmes. Memetic constructs form the basis for all societal constructs, so I think maybe you are under selling the importance of thoughts in this case.
Your first sentence is quite a claim. Do you have evidence that this is what enables structural inequalities and broken paradigms? Maybe it would be more reasonable to say such internal monologues help perpetuate these things. It seems to me that the structural inequality comes from first.
Internal monologues absolutely keep people poor. Failure to effectively negotiate is nearly 100% about internal monologues, particularly once the time has come for negotiation.
Perhaps. Wouldn't you agree that internal monologues often reinforce structural impediments, though? I.e. "I couldn't possibly do ACTION, I'm just an ADJECTIVENOUN".