[ogre_codes]

I'll leave the web searching up to you, but fundamentally crypto companies make money the same way banks do:

- Transaction fees when you transfer funds in or out of your wallet. (or they buy and sell at different prices which amounts to the same thing in the end)

- Float on deposited funds

- A few make money on other transactions or on mining.

The different currencies operate differently so the ways to make money as an exchange vary, but transaction fees are usually the big way.