I think even if it was a good investment to release that kind of high value software on linux and support it there (and it might be,) certain decision-makers may choose not to for ideological reasons. FOSS is often either treated as a resource for exploitation or some kind of anti-capitalist boogie man. I swear I've been put on some peoples' shit lists just for suggesting that we publish something under a FOSS license for visibility and goodwill.