Maybe currently not. But we will never be able to know, as models are undeterministic and benchmarks are kind of scams. When you cannot prove that something gets worse, rest assured companies will to it.
Then when competition really settles to monoploy or duopoly, like it always does in bigtech, it is really difficult to prove Anthropic and OpenAI enshittify their models. Same with Opus 4.6, that suddenly was worse when 4.7 came out.
I'm not following. Free markets and China will make sure that models stay bad!? Why didn't these entities already stop the progression we've seen? What has been motivating them all this time that has preventing them from stopping?
Keep in mind this was all science fiction just a few years ago.