alt Hacker NewsThe need to defend against scams and abuse is a cost distributed across all of society - it’d be amazing if there were a way for all to share the costs without creating a giant firewall to wall off the bad countries.
How does one take the good and reject the bad? Even our immune systems still get beaten by cancers.
That's life I'm afraid - no system that rewards participation can be entirely free of people taking advantage of it somehow. It's an unavoidable cost that we pay to get the benefits. The best we can usually do is to incentivize good behaviour sufficiently that the percentage of bad actors is very low, using rewards and/or punishments as appropriate.