Honestly, and stepping out of the "waaaah, I want things my way for everyone" tone of the conversation on both fronts, here's what I see happening moving forward:
Digital is the baseline, it's what everybody buys for X amount of money at launch, it all happens inside your system, you get a licence, whatever.
Box is what you buy if you're a collector. It looks fancy, comes with extras, costs a bunch more and lets you play just with the disc.
Clearly the future isn't just about mass markets anymore, Kickstarter proves that, and there is a market for Collector's Editions and certainly for people nostalgic of direct ownership, so I see the industry moving towards capitalizing on that for select audiences even as the mainstream sticks to the many conveniences of digital or even streaming.
Do I have an opinion on that, one way or the other? Meh. Both things have pros and cons, and I purchase both depending on the situation. I do worry about preservation, but on that front I'm less worried about the easily mantained and worked around download and authentication servers from first parties and a LOT more about ongoing server integration that makes games outright unplayable when the server side support goes down. It's not just MMOs anymore, guys, and I want to know how Elite: Dangerous keeps working in twenty years if it doesn't keep its studio afloat until then, disc or no disc.