I'm rather shocked you don't see the flaw in every one of your examples. The owner is the person to whom the gains of short supply are accruing. There's no ap

I'm rather shocked you don't see the flaw in every one of your examples. The owner is the person to whom the gains of short supply are accruing. There's no app to sell your reservation to someone else, scalping tickets is illegal or banned by the ticket vendor, etc etc. The short supply is due to a market failure; the city underprices the parking spots it owns relative to demand, increasing congestion and making it impossible to find a spot. This is to the point that people are theoretically willing to pay 20 dollars (or whatever Monkeypark will charge) in order to get an underpriced parking spot. It makes no sense to distribute foregone gains from underpriced city land to random squatting motorists, instead of just raising pricing and having that benefit accrue to the owner of the land (the city). It's the same concept behind not allowing people to sublet my rent-controlled apartment for market rates; the price distortion issue isn't with the sublet policy, it's with the rent control in the first place.