I know I'm being pedantic, but I made a very conscious decision not to depend on this technology any time soon given how brand new it is, for this exact reason.
Or building products on top of the early API offerings. If you build anything with serious traction they have the ability to undercut you with a better version in a very short time frame by virtue of actually understanding their system and ability to iterate on it - to say nothing of the ability to also hike prices or drop service at any moment.
Building on top of the OpenAI API now is like building on top of the early Twitter API then.
I know I'm being pedantic, but I made a very conscious decision not to depend on this technology any time soon given how brand new it is, for this exact reason.