When Bitcoin was the first to launch, it worthless, the price lower than $1, and a lot of people don't trust it and maybe their question like you now, "What the fundamental behind this digital asset" And see now, Do you think people know it will become like this??

So from nothing become like now, and you still asking about what the fundamental behind the concept 1BTC can worth 1M?? Bitcoin will do it, but need time same like when it first launched