At the target market caps people are talking about, I wouldn't blame anyone who shorts all three: even if you're optimistic about the value of the tech, monetising is hard, and competition reduces profits.
anthropic's products are much better, anthropic and google will win the AI race, we wont even be talking about OpenAI in a few years when they run out of $ or compute and get acquired. They will be remembered by their Wikipedia page(s).