Blackmarkets will always exist, "101" sales will always exist, that can't affect the code if it isn't in the whitepaper (our law or call it the constitution).

There are many "Loyalty points" out on the market, issued by various companies and people do use them in many creative ways.

i.e. Frquent Flyer miles points as one example.

Sure, a ticket can be bought for a friend etc. This doesn't alter the set value of the points when purchasing the ticket.

PS. I just woke up.

So let me fill this answer in here after a few sips of coffee.

People can trade anything they want, from Steem Monster cards all the way to kinky underwear.

If it isn't in the code, it doesn't affect the ecosystem, nor the value of those products/services as defined in the code, people can barter them or sell them, who cares.