And off hand induvidually the probably do not have such a large collection of fonts that the release of even one to promote a standard is acceptable. They may make many freely avialbel on there platform but they have no driving force to agree to even a few common ones. In short there is no computer entity that would benefit from free fonts and is capable of making the contribution. Offhand only IBM or SUN would have any reason. The only other group are people like me not wanting to play fonts substitution games with no common default.
Most platforms have and extensive and different set of fonts.
When I get a decent collection together I will make it publicly available. Then make them the default and let the user override with the platform specific font of there choice instead of me playing guessing games. It does solve my problems it is not the best solution. It is clear that a standard set of fonts will not be avialable any time soon.