many for profit companies have done this before, however:

Think about the incentive structure here, it incentivises not learning about bugs in the software. it incentivises as this always does, that those with money to swing around get additional explicit systemic power to dictate the features and bugs that get fixed. this is a bounty system with extra steps and not learning about bugs. and to boot, if a company really wants to pay, they can probably pay a dev of their own to work on many of these issues. it doesnt seem like this really solves any issues and just imposes a pay-to-speak system. ick.