Bitcoin now is over 3000 usd. How much bitcoin would you say you need now to be a millionaire in the future? I heard there is an expert that said bitcoin will hit 100k but this would take a very long time. This is the guy that predicted bitcoin would hit 2k etc when very few ppl thought about this...
Quite interesting that you tried to capture an illusive scenario. However, you didn't specify what amount of fiat one can have to become a millionaire. Is someone having just a million of his local currency considered a millionaire? Two? 10? Come on dude, this isn't easy to tell.
For example, with Bitcoin at $4000, I only need just a Bitcoin to enter the million threshold in my country because that will be around 1.4million. Nevertheless that won't make me a millionaire because it's still money I can spend within a month without realising or remembering what I spent it on.