It's really a short sighted vision from Mozilla (and others). No doubt that further regions will just copy/paste/modify the current EU framework and apply it locally, there's already discussions in Japan, South Korea and so on (1). Saying "We have no plans to maintain two version of the browser just for the EU" is just ignoring what is likely to happen in the future: An extension of this specific EU legislative framework in several parts of the world.

(1) https://cepa.org/article/europes-dma-goes-global/

Why 2 applications? You mean a webkit version and the real Firefox? What is even the benefit of using another browser on current iOS if it's the same as safari under the hood? Just a bit of UI?

Because the law defines a “gatekeeper” of a platform not by market power (which would actually make sense), but having more than a threshold number of users. iPad is not a popular enough platform to qualify.

pretty sure they already cooked up a legally convincing argument for why they have to block it