Frankly, I don't think such projects should be left up to the private sector to develop. If we did space travel that way we'd make the first moon landing in 2038.
This sort of live saving research is the best contender for R&D by government grants, if it's a worthy cause it can be supported for a long time (like fusion is being), and when the solution is found it can be immediately shared and sold at cost for the benefit of everyone, not hoarded by one company and sold at a ridiculous price to people that are forced to buy it or die.