You are right, from a legal point of view.
But in reality, nobody will ever come to take away my copy of FF7 for the original PSone, I can play it wherever I want and whenever I want. For digital, I cant for example take it to my friends house, lend it, give it as a gift to whoever I want, or sell it.
As I said before, we should always have the two option, and I would agree if they wanted us to pay more for the physical version. Like, $50 for RE HD (that will be released) digital and $60 if you want to buy it directly from Capcom website. It is fair in my opinion.







