It seems like they are offering investment management/advisement and brokerage services. The point is that cryptocurrencies are foreign to mainstream investors. People want to invest in them, but are scared to touch them. They don't understand the technology, how custody works and how to properly secure their assets.
That's why Coinbase is pushing an institutional custody product as well. Lots of money is waiting on the sidelines for more reliable, regulated and compliant services where institutional investors feel safer. These guys are just in it for the money, not for the freedom that Bitcoin was designed to provide.