I was thinking about the idea of Walter porting DM C/C++ to Linux, it would not sell well at all as the vast majority of Linux devs only use open source tools. However I think it would be possible to make a C/C++ compiler/IDE that would create standalone binary packages that you just paste on the HD and run like on Macs. That could attract a lot of commercial software companies to port to Linux. Gobo Linux is a good example of how this is done, you just put all the dependencies and configuration files in one self-contained folder. So you just totally ignore package managers and system dependencies and give the user a binary that is just click-and-run.

I think this would sell well, considering that gcc doesnt have any major competition except clang and maybe ICC.