The popularity of bitcoin is largely growing due to the expectation that bitcoin will continue to rise in value and reach very high price values. The future of bitcoin depends on this. The situation with ethereum is completely different. The focus here is on improving the functionality of this coin. Given the realities of the market, I think that over time, Bitcoin will gradually give up its positions. However, the price dominance of one cryptocurrency is unlikely to continue. There should be several leaders and this will be very well reflected in the overall operation of the cryptocurrency market.