That's just absurd to expect honest people to pay the price for bad actors.
Nobody is paying the price for bad actors. It's about resource allocation. These "bad actors" (spammers) are merely a consequence of the currently poor allocation.
You also would totally being doing away with the concept of being rewarded for participation on a website that draws people in to telling people you may have to invest to participate.
Anyone can "participate" - for free. We're talking about the amount of participation...because of limited resources.
RE: The Spam Problem - Some Statistics