I guess you missed this story from last week: Google To Pay SpaceX $920 Million Per Month For Massive AI Compute Power

Plus they have a hook with the common folk, the phone steers you toward Gemini (Android phones, obviously, and Apple currently partners with Google for Gemini for iPhone...).

For Claude and OpenAI, you have to explicitly want to go out of your way to use them, or use them indirectly through another service that has a hook.

Claude seems to have some software developers explicitly preferring them, though a alot of the corporate money is on Microsoft and Microsoft leveraged Visual Studio and Github to become the business-friendly frontend, and sure, you can use Anthropic models too... Though Microsoft ultimately has control of what is reasonably available and how much each one costs. Anthropic has a shot but I could see Microsoft pivot to really mess with Anthropic. The one gap in Microsoft strategy is the "native AI" workflow where Claude Code has won hearts and minds, but it uses massively more tokens for frankly marginal or sometimes negative value compared to a more curated use in-editor.

OpenAI I see as the most exposed. Lot's of data showing they are suffering from people being over the fad of going out of their way to use ChatGPT, especially since their phones have started embracing 'default' Chatbot. Software developers that are inclined to use LLM are also inclined to be pretty dismissive of anything other than either Anthropic or open weight models, depending on their inclination. Also Altman seemed the most agressive in committing to spending money they didn't have, though all of them exhibit this to some extent.

I predict Microsoft ultimately pivots to in-house models and convinces the businesses to go that way. Apple may continue with Gemini or roll their own eventually. Anthropic currently has the stronger position between OpenAI and them, but I think you are right that both have risk of just being left behind.