If everybody stopped training models today and Anthropic and OpenAI were deleted from the universe, I'd be happy to just keep using GLM-5 at its current inference cost. The article's author assumes that there will be a point where we will no longer have access to good models at reasonable cost because current models are subsidized, but GLM-5 disproves that.
Even in this hypothetical future, I will continue to use frontier models until they become "orders of magnitude more expensive", at which point I'll just fall back to the best open source model, which will still only be about 6 months behind. I don't see where the issue is?