To be fair, cost is the only thing that is prohibiting applications to adapt GPT. Even when GPT-3 was cut to $0.02/1k tokens, still it wasn't economical to use the tech in daily basis without a significant cost. i.e. would you add $10 extra a month for a user using your app with GPT-3 capability? Some do, mainly content generation, but majority won't.

Seems like we're going to have a vast among of Chat-GTP backed application coming out in the coming short period of time