there was no blockchain before the blockchain just as there was no nuclear bomb before physicists connected the dots and made something that is more than it’s sum. Of course if the tech fails it will plummet to zero just as with every product in a company that you buy shares in. If the product fails you lose your money, nothing strange to that. There are also many companies that provide open source products that are still profitable and people want shares in them too. I think you need to rething the whole model, it’s not that simple.