I had that same disappointment 20 years ago.
What I realized is that people have varying thresholds to what they are willing to do to remain ethical. Some people really don't care. Others simply have to survive, so they have no other option. (For example, working in the tourist industry that destroys nature.)
For this reason, my efforts now is to make it easier for people to do the right thing. By providing options that they didn't have before.
Another option is political discussion, to explain to people the consequences of some actions.
My point is that a lot of people know that what they do is wrong / unethical but they have no choice, they are alienated from their own work.
https://github.com/agda/agda/pull/8456#issuecomment-4062921702