5-10 years for reaching a mere 690? this must be a joke, if by that time bitcoin is still at 690, then something went utterly wrong, and bitcoin is done, none can save it anymore
It is entirely possible for Bitcoin to become widely adopted while the price to remains where it is now or even falls.
i don't think so, for example if big business companies enter in play they need to move an enormous amount of money, in the range of billion, and with the current tiny market cap, they will end in controlling the total supply, thus making everyone else(especially small business) deprived of the opportunity to use bitcoin
this is the primarily reason, why the price matter, and why can't stay at this level, when the fully adoption will kick in