Perhaps ignoring for the sake of my question, whether the demand for Bitcoin will increase enough for the price to increase 10,000 times (or perhaps people misplacing their bitcoins, anything else?)...
I'm curious about your thoughts on something. If someone thought the price would go up by that much, wouldn't it make sense to put all available money into Bitcoin, except enough to make payments where only USD (or not Bitcoin) is accepted - plus some emergency fund, etc.
Because they would be keeping all possible money in Bitcoin, I think it would make more sense for someone who thought it was likely Bitcoin was going to increase 10,000 times in the next year to make every possible purchase in Bitcoin. Am I missing something? Transaction fees have been 'sorted' now with other layers, right?
Disclaimer: I have always been fairly skeptical of increases in cryptocurrency prices (which means I've been wrong so far), and don't see the use cases which will lead to it holding value long term. I also have some tiny amount (fraction) of Bitcoin as change from some experimentation earlier, so I suppose I would benefit greatly from a 10,000 increase. It has already increased to more than I put in to begin with I suppose, so even that small amount might earn more next year than I would from doing a day job.
Editing to note: the last sentence does look a bit sarcastic, but it is meant it in friendly jest. I think long term holders of cryptocurrencies have done very well so far, so hopefully they won't grudge me thinking the huge increases sound to good to be true.
Also, I see someone has noted the high fees in another comment, so perhaps this issue is not solved.