Current generation premium HDR consumer TV's support 12 bit 4:4:4 media input though most only display 10 bit. Consider that capturing 16 bit or 12 bit raw gives you far better access to the camera's full uncompressed dynamic range and color gamut for grading when you compress those values into 8-bit or 10 bit delivery codecs. It is useful for fine toning of values in near white highlights and in deep shadow so that you retain shading, color and texture that would otherwise be lost with lower sample captures.
The best analogy for future proofing I can think of is syndication of old TV series from the 50's through the 80's. Pretty much the only ones that are still running were originated on film, not video. The quality difference is enormous as is the income potential over time.
Don't sell yourself short. 16 bit or 12 bit raw formats like R3D are the most space efficient means of archiving really high quality stock footage that is quality independent of the particular codecs or display technology used to view it at any particular moment in time, now or in the future.