It's actually really easy: force people to pay per packet. The problem is that we don't have any global system that has solved fast micro-transactions at a glob

It's actually really easy: force people to pay per packet. The problem is that we don't have any global system that has solved fast micro-transactions at a global scale without the concept of a permanent identity. At the dumbest level forums would look much different to what they do today if every post cost you $1 and every downvote $0.25.