Why no in-camera CA correction on Olympus bodies?

I doubt that it is a "policy" but rather a shortage of resources or know how (software expertise).  At least a lack of priority.  Back when Olympus released first m4/3 cameras and lenses, they actually stated that they were going to implement CA correction as soon as they could.  We're still waiting, just like I am still waiting for the promised firmware update to give EM5 single target small AF which the EPL5 and EPM2 have now (without having to go into the zoom frame).

I do think Panasonic lenses, as a general rule, have more CA than Olympus lenses.  I don't think that is necessarily a 'fault', as I don't know what the design choices are that make that so.  In any case, the fact that even Panasonic 4/3 lenses had more CA than Oly 4/3 lenses is perhaps what drove Panasonic to be more advanced with respect to providing tools to remove it in camera.

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Roberto M.