Games are getting bigger and bigger and drive space seems to be getting smaller, ps5 is only little over 600gb. Digital will not take off until next gen. Even then, a lot of people will still prefer discs as you have so many advantages to discs.
I was under the impression people are ok with deleting and reinstalling games, especially as higher Internet speeds are gradually becoming more available in developed countries.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.