LMAO. 25 million devices worldwide from all OEMs for all of 2024 is a rounding error. That's less than half of what just iPhone does in one quarter.
There are enough tech heads around the world to buy anything and everything that comes on to the market, for a time. Eventually they languish and move on to other things. Only the best products actually have staying power. Or, they're propped up by other revenue streams by a company that wants the image of selling a certain product. Hence why the Pixel still exists.
Foldable is a trend that is already peaking. Apple can maybe grab a few last desperate sales from that market, but it will likely be a 1 generation product like Vision Pro, assuming they are dumb enough to actually release it.