Which doesn't have to be a terrible idea. Explicitly encouraging transit app competition is great.
Now if only you could change the default handler for addresses to route to other mapping/direction programs. Once we get that, this teapot tempest will die out.
Carriers already push iPhone alternatives for all sorts of reasons. It doesn't matter how good the third-party transit apps are. Not having transit routing built in is an "instant demo" for any carrier sales rep trying to push an Android or Windows Phone. And, last I heard, Apple sells far more iPhones through carriers that they sell directly...
Now if only you could change the default handler for addresses to route to other mapping/direction programs. Once we get that, this teapot tempest will die out.