[SilverBirch]

They don't do this right now because they get revenue from Apps built using their SDKs. If they can no longer get that revenue they may well decide they'd rather just build their own versions and get 100% of the revenue instead, and for everything else just push developers into a web view.

Hell, without the revenue they could just turn around and say "We're not going to charge a 30% fee. But you need to pay us $10m per quarter to license our SDK". There's tonnes of options that Apple can use to squeeze developers for something that genuinely is hugely valuable.

I think people lose sight of the fact that before the App Store the way applications got onto phones was far far more favourable to the hardware vendor.