A pattern we see in LLMs: linear improvement in quality for exponential increases in costs.

(Of course, over time we've also rapidly improved the efficiency to deliver previously-frontier levels of quality.)

Still, if this linear value / compounding cost curve continues, it's possible to imagine that it's technologically feasible to create a level of quality in the model that is too expensive to be viable as a business.

Supersonic flight is technologically feasible for consumer travel.

It's just not a viable business.