it seems a bit long for achieving just running your own AI models locally, given it seems to be largely a question of vram and that you already _could_ do it today with a handful of graphic cards.
20y ago we had the GeForce Ti4400, current graphics cards now come with 100x the vram and 50-60x the bandwidth.
That's one hell of an assumption. Many of my Russian friends were absolutely certain they'll be alive and well for at least the next 20 years not that long ago.