Because everyone buys a camera with a FF sensor solely to create videos. Realistically, videography seems to be an even smaller niche than photography. But why go on here whining about it? If you really need great video, go find the best equipment you can afford for your video rig. Seriously doubt the equipment is what's holding you back though.
Video is a tiny niche? That doesn't pass the sniff test. Canon is announcing more small video cameras this year (5) than ILC camera bodies. Canon certainly doesn't agree with you based on their statements and quarterly reports. The other vendors are not in agreement with you either.
It's pretty obvious you're tired of defending their ill-conceived business practices. Honestly I don't know why you'd bother. Insulting me for pointing out the obvious isn't going to help.
I shoot about 50/50 stills/video. Back when I had more time, before I had kids, I'd grade video, had a full rig, all that stuff. I used Magic Lantern for a few years. Happily I don't depend on this stuff for income and I have the spending money to purchase what I want to use. I mention that because Canon is losing sales here - from people like me.
Before I left the Canon, I had two bodies and four red rings. I've spent the last ~4 years with kit from another vendor. In my current refresh cycle, they were ruled out out-of-hand because of video. The market is contracting, and I would submit Canon needs to be competitive on all fronts. You can call that whining if you want, but you just come off as sore and fanboi'ish.