There's plenty of Coinbase alternatives: Kucoin, Binance, plenty more.
The real money here is being able to create a "crypto fund" of several different currencies. The first exchange to create that kind of asset and market it to buyers is going to make big $$$.
Design your own crypto fund... man I wish I knew how to make a website that could do that.
RE: The Problem With PentaCore And Cryptocurrency Mutual Funds In General (And What To Do About It)