I'm not going to defend Boeing's conduct here for one moment, but I do think your statement is an over-reaction. The company employs 150,000 people, it contributes billions to the US economy, and builds significant aerospace know-how in the US. I imagine we could come up with lots of reasons why Boeing is a net positive.
These crashes are tragic and Boeing's conduct deserves condemnation, but a solution that keeps the company going and fixes the culture that led to this seems to be a far better solution than them going out of business entirely.