When they went out of beta/preview, the prices skyrocketed to absurdness and many people had to shutdown their app because of everything being coupled to their

When they went out of beta/preview, the prices skyrocketed to absurdness and many people had to shutdown their app because of everything being coupled to their specific API and the notice being to short to adapt. So yeah, don't invest into something when you don't know what the final pricing will be.