An incredible ironic statement since what you’ve done is only possible because of open source. If you don’t realize that taking a huge dump on the open source community will have profound consequences for Mapbox then you’re in for a surprise.
You may be right, it’s certainly a complex area. But I do think this will put a lot of wind in the sails of Mapbox’s competitors. The inevitable fork of version one will serve most people’s needs and it may pick up some real momentum. But most of all, I think the move will generate an incredible amount of ill will in the developer community. Who would trust Mapbox after this kind of bait and switch? Why would anyone use anything coming out of Mapbox if they have any kind of alternative?