It should be a rental, more like how TV show residuals, not a one time purchase. So long as the invention keeps providing value to the citizens, the inventor sh

It should be a rental, more like how TV show residuals, not a one time purchase. So long as the invention keeps providing value to the citizens, the inventor should keep getting paid for it. You could determine the value provided by auctioning off these patents through a Vickrey Auction, an auction that incentivizes people to always bid their true value. I'm fairly sure you could properly set this up such that very few people lost access, the inventor got more money than they could have made, and no one has to ever deal with the bureaucracy that the current system brings.