It seems the technique you’re describing is a kind of societal “good cop, bad cop”. Similar scenario to an interrogation too (trying to get information from someone who does not want to share the information) because in this case the challenge is “how to get people to share the capacity for self-determination, quality of living, and dignity when they clearly prefer to hoard it, even to the detriment of others”.
https://en.wikipedia.org/wiki/The_Cathedral_and_the_Bazaar