@NazzerDawk: I know that they are downloadable, but you don't seem to understand my point here...
I'd like them to release the games there aswell, so that programs like Xfire can support it.
That would require some reprogramming, which is impossible since the source code for both games has been lost. Even then, simply releasing them on GoG or Steam won't make them magically "compatible" with stuff, they both still require DosBox to work (or an actual DOS machine) - There would be no point at all to doing this