Crypto has been around for about 13 years and the number of users according to reports from many trusted sources has reached about 8% of the world's population, of course this is a fantastic achievement in a short time, but I believe crypto is not the last technology and financial system.
there will more breakthrough in financial technology which is maybe could be as alternative payment system and replace fiat in daily transaction. with blockchain and bitcoin adoption in many place , it will attract new technology in finance industry. transaction speed and also fee will be main solution build. but its will not easy , many obstacle will appear just like how bitcoin rejected in many countries at early.