A disappointing analysis. It discusses cost in isolation from revenue, and raises environmental impacts without mentioning that the major cloud computing providers where the largest models are trained and run are carbon neutral.
Better results for general purpose tasks are likely to find willing buyers at prices orders of magnitude higher than even the largest language models of today. In most cases, the best alternative is human labor, and for more latency-sensitive cases, there is no alternative to a language model available at any price.