So... The marketplace has looked upon and experienced a wholly laissez-faire environment -- and found it wanting.

You wouldn't think people would have to be shown that lawless marketplaces suck.

But I'm not sure that Paypal and eBay are materially laissez-faire. On one hand, they have had restrictions on selling otherwise legal goods for years, and on the other hand at least eBay was known to corrupt its otherwise workable feedback system by taking payola from big-volume sellers.