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!