It’s a brand new, highly competitive technology and ChatGPT has first mover status with a trailer load of capital behind it. They are going to burn a lot of resources right now to innovate quickly and reduce latency etc If they reach a successful product-market-fit getting costs down will eventually be critical to it actually being a viable product. I imagine they will pipe this back into ChatGPT for some sort of AI-driven scaling solution for their infrastructure.
TL;DR - It’s kind of like how a car uses most of it’s resources going from 0-60 and then efficiencies kick-in at highway speeds.
Regardless I don’t think they will have to worry about being profitable for a while. With the competition heating up I don’t think there is any way they don’t secure another round of funding.