The future of cryptocurrency is already inextricably linked with bitcoin and ethereum, these coins will not disappear anywhere even in the distant future. However, altcoins continue to develop very quickly and even at this stage, even if these two main coins suddenly disappeared, the cryptocurrency market would restructure and work further.
Although Ethereum has shown good results of its price growth this year, its potential in this direction has not yet been revealed. The price of ethereum will still rise significantly compared to even Bitcoin when the upgrade of its network is successfully completed.