Yeah, those days way back when, that's when film ruled. It does not now. That's the problem. Convenience. And speed. Film in whatever format you can think of, has lost out to the mainstream population, though it remains popular with those who were born and bred into it, enthusiastic and skilled with it, rather than latter day saints and sinners shooting porn, sexting and sticking their Samsungs in people's faces. Film is not convenient for the vast majority of people who want to photograph ("snap", then), well or otherwise. And it certainly is not fast. Retailers plug the speed and ease of use of smartphone cameras aggressively over other features, and indeed from those I have played with, the cameras are amazing (more features than all my cameras!). This instantaneous sharing ability across all social media platforms is the underlying driving force. I don't think we will ever, ever get back to the solid film market of 15-20 years ago. The best we can do is continue to buy and use film as best as we know, and if you can't beat the rest of 'em, join 'em. 'scuse me while I take a Samsung snap of the downpour outside my door...
Yes, precisely so.
I may have sounded like I don't like or wouldn't want 220, and that's not really so. If it were readily available at even roughly twice 120 price in emulsions I use I would probably keep a few rolls on hand, and buy a bunch for some travel and such. But it isn't and I don't let it bother me. It's not just that the mass market, and not just millennials and young people but anyone wanting vacation or family memory snapshots,
think digital is better for their needs, it really is, and vastly so. Most of us will even admit that and even the ones who won't admit it have to know it somewhere beneath their crusty retro-grouch exteriors.

And again don't get me wrong - I don't (yet anyway) own a digital camera other than my (excellent though) iPhone 6 and a 13 year old 3MP Nikon, and I own and use lots of film cameras. I love film. Digital is on the level of doing my laundry, something that I will do at need and don't find particularly onerous but certainly don't look forward to with excitement. Film is a niche market for, as you say, "those who were born and bred into it, enthusiastic and skilled with it" as well as those who find it suits their artistic intent for various reasons, both members of those groups and those new to it.
Even when 220 was being manufactured there was not much demand for it. Users were mainly wedding photographers. Now just about all wedding photos are digital.
This too.
Rather than bemoaning the loss of 220 I am supremely pleased that the array of 120 we have is still available, as well as superb sheet films and 35mm. Yes, there are many we've lost I'd love to have back. I would really, really hate to lose E6 and really hope Film Ferrania gets production going and does well as that seems the only real hope for it longer term. Kodachrome is lost forever and fondly remembered, and Kodak E6 emulsions had a range of traits offering very different choices than what's left from Fuji. But we have the best C41 films ever made right now. The Portras are great general purpose and portrait films and Ektar 100 is absolutely amazing for photos that suit it. TMY-2 is quite possibly the overall finest black and white film ever made, and there are just an amazing, when you think about it in context of what digital has done to film in general, selection of other black and white films from Pan F+ and Acros, both very different from anything else on the market, to solid affordable and very conventional Foma 100 and 400 (the 200 is a different animal and unique too) and even Adox CMS II specifically designed and marketed to mimic a lost film. Heck, much as I'd also like to have a deep infrared film like HIE back, or a slower but fairly deep one like Efke IR820, we still do have two near infrared films available, the Rollie and Ilford SFX. Then there is the very under appreciated C41 black and white XP2+.
I am way, way more pleased that these films are readily available in 120 than I am bothered that they are not available in 220.
It all kind of reminds me of the guy who was on the beach with his family when a huge wave came up and swept his son out to sea. He starts praying fervently for God to return his beloved son. After a couple minutes of this another huge wave strikes and deposits his son back at his feet, very much alive and unharmed. He then instantly looks up at the sky and starts yelling, "the hat! God, you forgot his hat!"