It's inevitable that an Xbox Series with the specs of the X (or even a mid-gen refresh) will be all-digital or at least have the option.
I think Microsoft and Sony really, really wanted to ditch optical drives this generation. But they decided to make sure the consoles had optical drives at launch. I wouldn't be surprised at all if a PS5 Slim or Series X Slim ditch optical drives entirely. And I all but guarantee the PS6 and 5th Xbox will be all-digital.
Lifetime Sales Predictions
Switch: 144 million (was 73, then 96, then 113 million, then 125 million)
PS5: 105 million Xbox Series S/X: 60 million
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima