That is a grey area... And depending on region the buy a license would probably not hold any weight in court, especially in regions with pro-consumer stances, because most stores advertise it as "Buy this game" and not "Buy a license for this game".
Er. Has everything to do with it, it necessitates the need to uninstall/reinstall games if you have a sizable library.
We are just going to have to agree to disagree on that second half... Because again, Physical is great... There is just lots of reasons to make Overwatch a digital only game on Switch.
You're not making any sense with this because if someone is buying physical their library will be on carts :/