Pretty much anything with a network effect could have a crowd sale a replace and improve existing centralized service. Obviously, not all these platforms will be successful. However, setting up the funds in a DAO makes it transparent. Technically, the it can be set-up in such a way where funds get released when the DAO votes how and when. I believe First Blood was set-up this way and is quickly becoming the standard with many Etheruem based ICO's. Shits amazing if you ask me.