Internet is almost everywhere now and therefore crypto currencies have no obstacle to become available worldwide. Its just that many people do not know the true strength and usage of bitcoins and few people fear because of bitcoin volatile nature.
This is not a volatile problem or a bad image that some people are against Bitcoin, but this is only a matter of time. One time bitcoin and altcoin will be used by everyone in the world when the use of the internet is evenly distributed throughout the world and surely the most important thing is the government. I must admit the government can make cryptocurrency used by everyone or even vice versa. Everyone will accept something new when their government approves and legalizes something to use. Therefore, every user will not worry about the assets they have in cryptocurrency.