Yes, I went there too and read a few of their pages, it does seem to me they are a third party vendor that will take a companies IP and convert/port/emulate their other platform games and let them run on current hardware/os platforms.
I don't have any issues with this as long as they get proper consent from said publishers, but what to do about companies that have gone out of business and their properties not purchased from somebody else ???
Not saying this happens much but it can....