Or rather, the others don't have preexisting agreements due to previous grievances.
For OpenAI this would be the first violation of regulations about news content reproduction. That would be lengthy court case with an uncertain outcome. But Google already went through such a court case (before Gemini was a thing), settled, and now with Gemini violated the settlement agreement. Showing that they violated the settlement agreement is much easier and quicker, so that's the news you get today.
That one seems to be NYTimes not understanding how LLM's work, and will hinge on technical clarifications (either OpenAI used NyTimes articles in training their model [fault], or the NyTimes seeded their prompt with enough article snippets to reproduce it [not at fault]).
For OpenAI this would be the first violation of regulations about news content reproduction. That would be lengthy court case with an uncertain outcome. But Google already went through such a court case (before Gemini was a thing), settled, and now with Gemini violated the settlement agreement. Showing that they violated the settlement agreement is much easier and quicker, so that's the news you get today.