> Users must take responsibility for knowing how software works and the motivations of its creators.

This doesn't seem reasonable. Let's try to apply the logic elsewhere:

> Patients must take responsibility for knowing how medicine works and motivations of its creators/prescribers.

Requiring everyone to have deep technical knowledge about anything they use would prevent everyone from using more than the things they are experts in. So, there needs to be either a technological regression, or something to help defend users from unethical practices. The only entity really in a position to do that is a government, for better or worse.