Ubuntu is coming on strong so Adobe will put flash on it. MS is no longer the driving force for anything. As for Linux and open source, linux works and I care not if any proprietary app runs on it as long as it works. I use both OS and closed to design and build web environments. I also use MS and Apple for the same thing. In the long run OS will rule because no closed environment can be the end all and be all for solving the kind of complex problems that arise as the web increases it's influence on all things dealing with commuting.