Once allowed, the corrupting influence of money would take over. People would be guilted into this by family for sponserships and such.
Not that long ago a woman received a huge forehead tattoo for an online casino as a PR stunt. They paid hew a few thousand for this stunt. She said she needed the money for her kids.
I don't think you're fully understanding how many desperate people out there would sign up for this or be forced into this against their will under the dishonest guise of "volunteering."
Look at the near revolt of the early space programs for example both Soviet and Western, with astronauts and engineers demanding safety measures and more personal control of the spacecraft after high profile "dog eat dog" philosophy failures that killed and injured many. We've already been through this. It doesn't work.
Lastly, a lot of engineers might walk away from the job for ethical concerns because they dont want to build suicide machines. Look at how MD's refuse to be part of state executions in the USA, thus leaving a cottage industry of a fairly incompetent execution industry. Your best people would walk away from SpaceX, Boeing, etc if tasked with making suicide machines for vulnerable people. People have ethics and not all subscribe to bottom-tier "dog eat dog" capitalism "volunteerism," but instead are educated to know what that means and how that's historically abused our most vulnerable.