4K Cable Box Addition/Billing

I've tried to replace my current cable boxes with two 4K boxes.  Over three separate phone calls with different CSAs I've been able to deduce the following:

4K programming, albeit very limited, is not a separate charge.  There are two options for a 4K compatible box.  The wireless option requires a Comcast Gateway (incurring a monthly $14 rental fee).  I have my own Mesh wifi setup and do not want to replace it with Comcast harware.  If you elect for the hardwire, you must include the $10/mo 150 Hour DVR option in your plan.  I barely use the 20 hours I have included in my current plan, occasionally recording sporting events I can't watch live.  In Comcast's literature it explicity says Live 4K programming cannot be recorded.  As I see it, I can either pay for an inferior Comcast Gateway, or I can pay for a DVR service which can't record the very programming I'm looking to gain by adding a 4K box.

With all of that said, what I'm looking for is, "Why"?  I understand Comcast reserves the right to charge whatever they want and I as the consumer can either pay up or move on.  Am I missing something or is Comcast just that blatant with their nickel and dime policies?

Adam