I never do understand perceptions like this one of 5D IV being "segmented out" to protect the CXXX line. There are features in the CXXX line that the 5DIV and other DSLR and MILC will never have, and are not built to handle, that many cinema cam shooters need and want. Most of those people, in my opinion, won't be dropping down to a 5DIV just because it Canon gave it 4k 60. Two different form factors for two different primary purposes. Two different form factors for two different primary markets. Yes, there is product segmentation in the various lines, but I will never believe Canon is holding back features in the DSLR and MILC lines to protect the cinema line. Not the same product or market.This. I think the issue is less with Canon sensors (though there is room for improvement there), and more with their processing. Though there is certainly a part of me that thinks a 5dIV could do 4k60 and Canon just segmented it out to protect their Cxxx lines.