

The sad thing is, they had support for Linux in the past. And I mean not only making the launcher run on Linux, but with Linux builds of games:
OS X and Linux support
In October 2012, GOG.com announced support for OS X. They included the previously Steam exclusive (OS X version) The Witcher and The Witcher 2, both made by CD Projekt Red. GOG.com gathered user feedback in a community wishlist, and one of the most demanded feature requests was support for native Linux games, which gathered close to 15,000 votes before it was marked as “in progress”.[20] Originally GOG.com representatives said, that there are technical and operational issues which make it harder than it seems,[21] however it’s something they would love to do, and they have been considering.[22] On 18 March 2014, GOG.com officially announced that they would be adding support for Linux, initially targeting Ubuntu and Linux Mint in the fall of 2014.[23] On 25 July 2014, Linux support was released early, and 50 games were released compatible with the operating system.[24]
– https://en.wikipedia.org/wiki/GOG.com#OS_X_and_Linux_support






Rust does not support Linux. The developer is for some reason against Linux and the fear is, if the buys New World, that he would shutdown the Linux support for it.