[sofixa]

If they're anonymous, what's stopping a bad actor from creating tons of accounts to circumvent limitations?

Cash is impractical, and on and offboarding of serious sums raises questions ( you can't easily withdraw or deposit massive amounts of cash without the bank asking questions/flagging transactions, and even if you could, transporting it is cumbersome).

[billdietrich1]

Is there no good way to size-cap and rate-limit anonymous accounts ? Maybe not, if the bad guys slowly build up a large mesh of accounts and use bots that use lots of different IP addresses etc.