> bad actors quickly realized this is a force multiplication factor for them You'd think we would have learned this lesson in failing to implement email charge

> bad actors quickly realized this is a force multiplication factor for them You'd think we would have learned this lesson in failing to implement email charges that net'd to $0 for balanced send/receive patterns. And thereby heralded in a couple decades of spam, only eventually solved by centralization (Google). Driving the cost of anything valuable to zero inevitably produces an infinite torrent of volume.