It's a valid point, but most of the people that matter have learnt that it doesn't matter, I believe several governments support open source, nearly all tech companies do (IBM does a lot, even Microsoft). Most other companies have little reason to, they need Office. A lot (all?) of the computers aimed at old people, or nonstandard functions like routers, TVs are clearly not Windows, do non-tech people think about this? I've taught my parents too much to test this, what do old people think non-Windows/Mac is? It is all open source.