Nobody seems to know. Which is why you should not dismiss it.
I recently bought a Switch, and along with it I bought two physical copies of games only because Nintendo is just so far behind on everything outside of making great games.
I own like 300 plus Xbox One games, many of which are backwards compatible 360 games, and 7 of them are physical, because I bought 3 games on launch, and I have received 4 more physical copies of Xbox One games as gifts.
When you start to own let's say dozens of games, that are digital only, and your life is not constant trips to GameStop, it is a freeing experience.
You may save money over time, but if you have a job, the amount of time you spend doing this whole buying and reselling games, it is probably close to a job at McDonalds.