2 out of 3 is highly subjective depending on which demographics you are using. Yeah I'm sure younger gamers might not care as much but some do and many other older gamers care about ownership and de-listings as evident by this poll.
Celebrating the loss of a disc drive is basically saying "I don't care about losing games forever or getting screwed over price-wise by my corporate overlords". I just don't think the market for that crowd is big enough yet.
All this talk about getting screwed over by price is rediculous. When the steam store was the only online gaming store on pc, and gamers had long since abondoned physical disks, were prices out of control?
Your completely forgetting that the market for "free time" and "entertainment" still has a ceiling.
Lets go with your theory - games are only available for digital, and god of war 4 is $199. (no idea why, but lets go with that) Do you really think sony is going to sell millions of copies at that price? They will have priced themselves out of 90% of the sales. The casuals simply won't pay it. Heck, they won't even buy the console in the first place. They will watch netflix, go outside, go see a movie, play a mobile game, or do something else.
And losing the games forever? Do we not own hard drives? You do realize an optical disk is no different than a hard drive - they both hold data. You don't actually own either, you license them in either form.
Even beyond that, a lot of AAA stuff is being redone, re-released in better form, or available as a retro game. And last course, you can emulate whatever you want if the evil overloads are oppresing you.
This corporate overlord thing is getting rediculous.
And it's not matter of celibration, it's a matter of what's going to happen. Kids these days barely even know what a disk is, it's about to get much worse if you think it's bad now.