Big corporations releasing HDR films want your system to always have HDCP 2.2 active. Not only this, but they even can decide that systems exactly will have feature enabled. Like they forced Intel to not making it work in Gemini Lake.

Most i7 and i9 modern platforms still do not have HDMI 2.0 ports... because of HDCP, LSPCON ships are expensive if they have proper implementation of HDCP 2.2.

Lot of older TVs have HDMI 2.0 ports, but not with HDCP 2.2 support disabling output if you watch legal 4K content and making you learn useful stuff to watch same content in higher quality and much cheaper :-)

Of course Intel famous laziness, as they did not change their GPU part for 3-4 generations, also plays some role here.