Anyone have any source that cites it's sources for the profit margins on code signing rackets. I imagine for mobile the margins are especially high since phone

Anyone have any source that cites it's sources for the profit margins on code signing rackets. I imagine for mobile the margins are especially high since phone o/s design makes it much easier to put less effort into audits. I bet the profits margins in both mobile and standard are absolutely monsterous. By the principals of business I assume they put in the least amount of effort possible while still putting in enough to protect themselves from blame