You probaly are correct in this for the future, but personally, I hope it's the more distant future than the immediate. I'm an old fart, for sure, but the thought of not having physical media makes me ill. No, a big hard drive doesn't cut it for me
Neither would a bunch of thumb drives.
The only thing I can think of that would satisfy me other than physical media would be instant on demand of anything I could get now. Call, text or flip through an on screen menu to pick what I want. Pay for it once and view all I want, when I want from where I want.
Long live HD discs