in short and simple terms, those parasites colluded with hardware manufacturers and put a special chip in your computer and monitor that runs enslavement software
without opening it up physically there is no way to make it stop or get the raw stream before it's displayed
This. Some ways back I actually purchased bluray recording device only to learn that its firmware is deliberately crippled to accommodate someone's business model. There are people who do the unsung hero work, but those types of skills are not exactly common and a business asshole is a dime a dozen any century you want to pick.
without opening it up physically there is no way to make it stop or get the raw stream before it's displayed