Like you rightly said, as more and more countries accept Btc, more investors come into it and the price rises. I again think that the price also goes down as low as we are currently seeing now because more and more people can't stand the fall and keeping dumping theirene Btc, and hence increasing supply over demand thereby leading to the fall. What this means is that as more people avoid dumping Btc, the price will stabilise and rise again