Coinbase needs acquisitions. Right now, it's a cash cow charging 1% fees on each buy and sell, but with Circle coming up with their 0% fees, that would change. There's no customer loyalty here, just the cheapest option. If they want to remain competitive in the next 3-5 years, they will need more products and services. Their present revenues are great, but I am not sure that's sustainable based solely on the current business model.
Acquires? It's more like hiring the two guys and buying the source code.