Just curious what exactly they do, how do they convert it to Fiat? OR they retain them.
I'm sure they convert it to fiat, and that's exactly what they are suppose to do in my opinion. Ethereum just provided the platform for the investments and funding to take place. Once they get the funds from other investors, the company owners should use them to develop their project. If they need to develop infrastructures or technology, and they need to buy materials to work with, then they need to convert ethereum to cash, in order to buy those things. As on how they do it, I guess they do the same thing as anyone else. They get it to an exchange, and then to the bank account of the company.