Well, that's an interesting escalation although not wholly unexpected, to be honest. Fundamentally at it's core, a rapacious tactic and let's be clear here was intentionally deployed too explicitly bully consumer compliance which in this case (pun notwithstanding : P) describes a stark prosaic sense, that Epic is publicly…
Consoles will be difficult to target, because they're not anything close to a monopoly as most of the same games come out on PC. But it's a very reasonable assessment that Apple and Google hold a monopoly over smart devices.
The 30% cut is a relic from the days of physical sales. A 5-7% cut is enough to break even according to Tim Sweeny and Epic seems to do a lot more for consumers and developers with 12%. This obviously has been a long time coming and an intentionally rebellious and theatric act and I'm here for it.