In this case "most common software" meant proprietary and nonportable operating systems and applications. Would you buy a server that will run the software you

In this case "most common software" meant proprietary and nonportable operating systems and applications. Would you buy a server that will run the software you want to use either never (Windows and Windows applications developed on Windows) or maybe, eventually, as long as the new platform is a success (only slightly more portable proprietary Unix variants)?