Repeated unethical behavior is not the fault of a few bad actors, but of an organization designed to encourage that behavior. I wouldn't discount Google as being at fault seeing as how we already have two instances of Google's ATAP committing patent fraud despite little research and outreach being done.
One fun fact I stumbled across is any misconduct when filing for a patent voids the entire patent application, not just the claims that the misconduct occurred in: https://www.uspto.gov/web/offices/pac/mpep/s2016.html
Assholes hire assholes. Eventually the assholes all float to the top and make asshole decisions. You can't win. This is a failure mode of every organisation I have ever seen.
My take on it is as long as there are instruments to abuse there will be unethical people to do so. Patent law and drug prohibition are equivalent, to me, in this way. They create unnatural economic sectors where unethical behavior is favored.
They give a legal framework for unethical people to prosper. They are "hacking" the system. Highly moral societies are especially ripe for this kind of victimization because many of the "laws" are social norms that everyone just follows.
Designing am organization and keeping it running well are incredibly difficult. What you see as encouraging poor behavior could easily be poor management. I have never worked at Google so I do not know.
One fun fact I stumbled across is any misconduct when filing for a patent voids the entire patent application, not just the claims that the misconduct occurred in: https://www.uspto.gov/web/offices/pac/mpep/s2016.html