What happens in other engineering disciplines is the government revokes your license if you make a decision that violates your discipline's standards. Companies can't generally just force their engineers to do irresponsible things because even if they fired you and hired someone new, that new person would be putting their own future employability on the line by conceding. Better to get fired from a bad firm than to have to find a new career.
Obviously this doesn't solve all the problems, but it works as well as any solution I can think of.
The caveat when it comes to software is that coming to a consensus of what the standard procedures and policies should be would be nearly impossible. If and when software joins the licensed engineering fields, a lot of people are going to be very upset at whatever the requirements end up being.
