What status quo? Just look at Openrouter's rankings: https://openrouter.ai/rankings
Things change radically month to month. Nobody is remotely close to capturing the market or having any kind of stability over time. People move around quite a lot, often to sidegrade within a generation. Just playing fly on the wall with discourse would be enough to tell you all of this, even without the data to back it up.
That's got a significant selection bias. Claude and ChatGPT and Gemini and other subs do not go through openrouter.
If anybody has, it's DeepSeek. But, with the promised price hikes, I'm sure that'll change. I'm guessing they're raising prices not because they're not making a profit at those prices, but because they're running into capacity problems and need to slow down until they've got more or risk providing poor service. For now DeepSeek Flash is the best deal going for API usage and its popularity makes sense.
Also, OpenRouter misses most of the usage of the US models, as most people are getting those from the vendor directly via subscriptions.