Technology

So these are the points I can gleam from you.

You can own plane tickets:
No you don't. Airlines own planes and if they want you to be able to sell your plane ticket they will just allow that. People sell and change their plane tickets all the time. What you cant do if you have your ticket on the blockchain is easily change it to another flight because a storm cancelled the first one because allowing the airline to have that control over your ticket breaks the system.

You own things in games:
The company owns the game. if the company restructures at any point and closes down the servers you will find out that you actually don't own a game card. You own a very long string of numbers that are useless without the game and the intellectual property of the game

You don't have to rely on institutions to enforce contracts and ownership:
Nothing makes me sound like an anarchist faster than this kind of bullshit. Contracts are enforced by the dominant state apparatus trough the sanctioned use of violence. No other magic can make you own stuff.
Ownership and contracts as we currently understand them must work like this because most of society is still made out of flesh stone and metal. I don't own my house because I pay money for it. that is part of the deal when I moved in, but the main part of the ownership is that I have a deal with the government that they will send armed men to the building I live in if someone else tries to live in it without my approval. I dare you to name any ownership that doesn't work like that.