Bitwise yes, moneywise no ... the costs added on display devices for the extra necessary gates to decode high fps streams is problematic (progressive vs. interlaced, when EBU was deciding things, was already not a big deal in any part of the chain). When H.265 is being hammered out and almost all displays are 144 Hz+ to begin with, HD slowmo cameras ubiquitous and transistors cheaper than ever I would definitely want to see high fps modes being a fundamental part.
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