John please re-read, I didn't blame MS, I blamed the manufacturers (though I did imply that MS may write some drivers).

I seriously doubt manufacturers have any difficulty in understanding open source software - rather more open than MS in terms of info, I would say.

I seriously doubt worries over unstable software would be a worry as Linux is more stable than any version of Windows.

Maybe it's just that manufaturers consider it not worth while to support other platforms but it is unusual not to investigate and attept to support new potential markets.