OpenOS's, I think, whether its, Unix-Based, Linux-Based, Other-Based. Actually OpenOS is a better term than Linux, since there's all types of OS's.
Which ever Distro becomes king, I think the only way for any one of them to become a real boom in the market is to create a universal system that understands how to *automatically* install things and put it in a controlled environment. Controlled meaning that you can build on the OS, but don't make folks and at the same time make sure software (such as OpenOffice) is auto-install compatible, without the need of Sudo. Although I guess Auto-Sudo would be a good idea.
Windows is a extreme case of software environment control, since they don't really listen to experts like Chris Pirillo.
Just take the complications out a OS and you got something. Don't care if Micro has been around for years, their getting terrible.