Software could be written to do the same thing for OSX or Windows if there were enough interest. The fact is that the use case for what X offers nearly never c

Software could be written to do the same thing for OSX or Windows if there were enough interest. The fact is that the use case for what X offers nearly never comes up (relatively speaking). No competent software developer would base his whole system around a use case that 99% of all users will never use once in their life.