Open Source (as opposed to Free Software) was intended to be friendly to business and early FOSS fans pushed for corporate adoption for all they were worth. It's a classic "leopards ate my face" moment that somehow took a couple of decades for the punchline to land: "'I never thought capitalists would exploit MY open source,' sobs developer who advocated for the Businesses Exploiting Open Source movement."
I'm not sure I follow your line of reasoning.
The exploited are in the wrong for not recognising they're going to be exploited?
A pretty twisted point of view, in my opinion.