Despite things looking kind of grim currently on the US front I really don't think we've seen the last of Tamagotchi on American shores. It may take a few years but sooner or later a wave of 90's nostalgia is going to hit and companies are going to want to cash in on the nostalgia older 90's kids have for the decade. Bandai, having had one of the most popular toys of the decade will probably jump at the chance to cash in and release an updated Tamagotchi.
As an 80's kid I've seen it before. Currently merchandisers are falling all over themselves to appeal to adult 80's kids. The toy shelves are full of 80's throwback lines and the theatres are showing blockbuster films based on 80's properties. We're in the middle of 80's mania right now but in a few years it'll be the 90s' turn.
And frankly I expect pop culture to get a little bit cooler when that happens. You 90's kids don't let the 80's kids put one over on you. As an 80's kid myself I can tell you most of your stuff was better than ours. Your cartoons are better, your toys are better, heck the only thing about the 80's I like better than the 90's are the movies. But even then the 90's gave us two of my all time favorite films, Dragonheart and Small Soldiers.
So don't give up. The 90s' time is coming again. And I'd be shocked if a Tamagotchi revival ( a real revival with actual devices. not just a phone app ) doesn't come with it.