Boeing 737 Max aircraft have aerodynamic and engineering design flaws
The sensors that can detect potential problems were not reliable. There are two sensors but the Boeing design only used one of them.
Boeing cut corners to save money
To save even more money, Boeing allowed customers to order the planes without warning lights. The planes that crashed didn't have those warning lights.
There were pilot training and maintenance log issues.
Finally, according to the Seattle Times, the regulators got into bed with companies they were supposed to regulate
Conclusion:
This company should go out of business and the MBAs that cut costs on this plane thrown in jail for murder