So, what does that mean to you? Regarding the relation of cameras to phones + how easy it would be to program a controller?
I think that they're (more or less) unrelated. The cameras probably have the legacy OS from the VCR's and TV sets - enough to power the menu but without much computational power per se, with the signal path having a separate system/codecs, processors, etc. Something with a Linux kernel would probably be much easier to crack/mod by the third party like the Magic Lantern. And it kind of makes sense too. A phone OS and the related CPU would be a surplus to requirements.