The problem is it’s kind of murky now since most discs don’t even contain the game anymore. So yeah you can lend/sell them but you’re still dependent on a digital store. It’s just a license for a digital game in physical form. I say this as a physical media proponent.

I am not pro-digital only but if the discs don’t have the game I’m less inclined to pay extra for what is likely to be the first part of my console to fail.