Yes. Collector's value.
There are many valuable items that can be sold despite not functioning anymore.
You do this with every game you will ever buy.
You will play it once. Or twice. Or thrice. Or maybe even 100 times. But eventually, you won't be playing it anymore. It has no value after that. Sell it. Or give it away.
Also you are still badly underestimating how valuable some of these physical games for
People.