So far, crypto currency has a promising future to dominate the financial global trade market and in this guise, everyone who comes across an opportunity to invest in it from the internet or from friends who think it might pay off well, should invest first upon asking the right questions and getting a satisfactory answer, before doing further personal research and then coming back to a cold investment front.
Bitcoin and cryptocurrency market is very small compares to many traditional markets so it is non sense by saying it can dominate traditional markets. In addition cryptocurrency market has many scam altcoins that appear and die with time. With basic scam and also weakness of altcoins, the altcoin markets will not dominate traditional markets.
While you must be very realistic that only Bitcoin is not able to dominate traditional markets. I believe in Bitcoin future and growth but I don't have same thinking like yours.