A great example of one of the downsides from physical only: Panzer Dragoon Saga was only released in something like 50000 copies worldwide. Sadly the source code was lost and the game will likely never be remastered. Had it been digital, it would be available to all and more people could've enjoyed it.
It was more like 150,000 copies for the western world (minus an unusal number damaged in shipping). I bought it years ago and absolutely fell in love, it's a real pity that so few will experience its greatness.