How so? There's an entire film and television distribution industry that (currently) dwarfs Netflix in scale. They all have their own requirements, though usually not written out with such clarity.
And, these are not onerous requirements. They ensure good quality but don't impose significant costs. There are several cameras here for under $10k, which was unheard of even a decade or two ago; when I worked in television in college (20 years ago), the cameras in the studio cost ~$80,000 each, and the decks we edited on cost ~$25,000 each.
If you're making a show specifically for Netflix, you follow these guidelines; if not, you can make it however you want, but these aren't terrible or adding significantly to the cost of a production. I mean, there are several line items on most productions that'll be more than the camera. And, in post-production, resolution and file size barely matters today; a computer can chew through 4k almost as easily as 1080p, and multi-terabyte hard disks are cheap-as-free.
