The companies that have real boards would never take the risk.
Once Elon’s air cover is blown, the government is going the dissect Tesla. Once someone gets the injunction to stop deletion of crash data and allow for inspection, they are cooked.
I don't think self-driving is remotely close to working at any scale. I also don't think it's the killer-app. Right now, cheap electrics and moreso cheap hybrids are the killer.