Do you think Bitcoin will remain the most dominant coin both short and long term? Even though it does not remain the most dominant coin, this will not be the same as saying that Bitcoin wont exist long term.
Since many ICO projects and the emergence of various altcoins, the bitcoin dominance in the cryptocurrency market has continued to decline so that bitcoin market capitalization is finding it increasingly difficult as investors prefer altcoin to be an investment in the very near future for profit. I'm not sure bitcoin will continue to dominate as the market capitalization of altcoin continues to rise unless investors begin to move their digital investment assets to bitcoin.