Software engineers can make quite a bit at projects and companies that ultimately fail.

Should we hold developers at uber criminally liable if the company fails? management? where does it stop?

Can be quite a bit -- the low bidder gets the job and gets paid. The higher bidder doesn't get paid and gets to continue looking for work.

I'm not sure how we can quantify it but we've had the car emissions scandal, the Boeing scandal, perhaps a self driving one..

It seems engineers screw up on purpose often enough that the monetary incentives must be there.

Just look at the anti-consumer tactics used in the software industry and you have your answer.