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.

Perhaps you are unfamiliar with the "leopards ate my face" meme? https://knowyourmeme.com/memes/leopards-eating-peoples-faces... The parallels between the early FOSS advocates energetically seeking corporate adoption of FOSS and the meme are quite obvious.