No real market can ever be built on the idea of guaranteed sale. The idea that someone wants something is not sufficient to mean they can have it. Concert ticke

No real market can ever be built on the idea of guaranteed sale. The idea that someone wants something is not sufficient to mean they can have it. Concert tickets are limited in number by venue and artist. I disagree with the assertion that result is good outcomes for the richest. Many concerts, store sales, and such, also have people camp out for access. Online systems have no person to person interaction requirement which makes it ideal for automated systems. So the real result is, when up against a machine bidding for a service or item you want of limited supply you will lose. To prevent that might require limits based on some form of personally identifying the buyer and then restricting use to only that person. A bit privacy invading but it could be done. The only way it will get done is for the artist involved to force it.