Boeing has used it's market power to keep these away from passenger and airlines.
So it's not just a matter of people getting killed. It's people getting killed so you can pay more for airline tickets, have less room and comfort when you fly, have less frequent flights, hear more noise from airplanes, and experience more global warming.
As for global warming note also that the 737 has terrible takeoff performance, even under favorable conditions it has twice the takeoff distance of some much larger airliners. Every hot summer you will hear that "airplanes are grounded because of the heat, but really "737s are grounded because of the heat" because the 737 can barely take off as it is.
This is what secular stagnation looks like. It is undercompetition and underinvestment, just like we see with wireline internet service in the US. Don't let neoliberals fool you with the "there is no alternative" line because there is.