[gs17]

The discussion was more about in-game items than game licenses, but that falls under "almost no devs really want that". Devs want to be able to ban problem players from their games. Devs want (or at least would prefer) you to have to buy a new copy of a game instead of a cheap used one. It would be nice if we could transfer the licenses, but the developers don't want that.

And it also doesn't require blockchain. Valve not allowing it isn't a technological limitation, it's a policy. The system can't stop you from leaving a sheet of paper with your username and password on it, but Steam can ban you if they somehow find out.