When looking at market caps - popular cryptresources, one of the things that many people are focused on is Bitcoin's status in relation to other coins. Although this is a great way to see which coins rise into the ranks and grow in adoption and value, the fact is that bitcoin is unlikely to lose its status of dominant crypto currency - at least right now. Bitcoin has the advantage of the first switch, since it is the first and oldest crypto currency. This is where adoption began, and, perhaps, why crypto-currencies really have value!
Bitcoin will never lose popularity. From time to time, many people are getting familiar with Bitcoin because they are attracted by the rapidly growing and increasing prices of Bitcoin. People are beginning to see it as an opportunity to invest and do good business. Therefore many people start to know Bitcoin and from time to time, will be more and more. The most prominent promotion I find is in social media. Especially the amount of discussion about the crypto that exist in various facebook groups. I really like to read it because it can increase knowledge and can give profit. There are a lot of people talking about new Altcoin and potential Altcoin going on in the market.
Yes, bitcoin will never lose its popularity at this moment because there are still countries that do not know bitcoin or only few people know this. There is still a huge market for this because most of the time, an investor needs to convert his money to bitcoin before he can invest in altcoins. So in conclusion, bitcoin still represents the overall market of cryptocurrency because of this reason.