With Bitcoin accepted means the governments showing support to Bitcoin no matter the amount and it can stimulate the market, which means this s a fresh air for investors. Rejection also has an impact, the price can fall immediately if the country of where the investors live or the facilities used by the investors suddenly reject Bitcoin. Many countries havent decided yet, theyre still in the gray zone or reject based on the Law that prohibit it, but its still gray in my opinion because it doesnt discuss in detail about the prohibition against Bitcoin.
Its because bitcoin is not regulated. For bitcoin to operate on such a country, it needs approval. There are several countries that approves bitcoin, like japan. We see that japan is a rich country, and a open minded countrymen. They see bitcoin as a help for their country economy, and because of that, their country is becoming more richer and advance in technology. If other country see its good side like japan did, i think that the other countries will be successful too.