I feel that you haven't yet had the pleasure of using an eShop and it going offline with no way to access your game.
I'm a fan of Google but let's look at their track record with how many of their services they have tried and then taken offline.
Whether you like it or not, physical media is king of OWNING the game. Even with Steam you're never buying the game, you're just buying a license to use the game, and if Steam ever went bust, that's your whole library gone.
The video you linked is of a guy I regularly watch and is a collector of games. I, myself, am not a collector but I do prefer having a physical copy of a game knowing I'll have it forver. However I do see the benefits of digital media and I was all for what Xbone originally wanted to do with their games. The reason i was for it is because the games were likely going to be a lower price.
The only reason digital hasn't completely wiped out physical IMO is because you can often find physical games for a lot less than digital.
I think Nintendo is doing the best with their eShop as they are often doing sales making digital versions a lot cheaper, which makes the trade-off worthwhile
Fair enough, but that physical game you own will more than likely need a patch. It's incomplete.
Also, nothing is forever on propriety consoles, anyway.
PC is an open platform and games can be preserved in one form or another. A lot of games on Steam are even DRM free and of course you have DRM free services like GOG, which you could just back up your games and store them anywhere you wish. In fact, in that sense owning a physical version is worse i.e. incomplete versions, disc breaks/scratches, or even lost, then you have access to nothing. Not to mention cartridge rot and optical disc degradation.
The only reason physical media is still a "thing" is because publishers want it to be, for now.
Lastly, Steam, etc aren't going away in the near future. Too much competition on PC for that to happen and if they do, you'll probably be dead anyway by that point.