Sorry, but what are you talking about? How does this "insurance" solve a problem, with or without crypto?
OSS dev: I want to make a living from my OSS work without starting a business around it or seeking employment.
Insurance usually goes the other direction. Large organizations can amortize risk. Individuals need to mitigate risk. Having somebody buy insurance on my code makes me less likely to want to release it rather than more likely.
OSS devs would risk future earnings only.
All you did there was state the basic tenet of capitalist wage labour, except no taxes.