[nurb]

How do you prevent such company to end up like Boeing?

[greenavocado]

Failsafe design. Safe, reliable, automatic, unattended shutdown. Nothing more can be done because people are their own worst enemy. Incompetence and dissolution is the ultimate end product of every organization whose members not bound by ideology or harsh punishment as the incumbents grift away what remains on the inevitable way down and the incentive structures crumble or the money simply runs out.

[kibwen]

All failsafes are a result of redundancy.

Profit motives are incompatible with redundancy.

If left to private companies, the design of the reactor will not save you, because the design will be altered to extract the maximum profit.

[greenavocado]

The design still needs regulatory approval, and this is where a specific level of safety can be mandated.