The only moat they have is the fact that you still need a GPU of some kind to reliably run even a tiny LLM. But the gap between what absolutely needs a server farm and what can be ran on a store bought gaming computer is quickly closing. You can already run mixture of experts models on gaming rigs with a high degree of usability compared to just one year ago. And that tech continues to be pushed further and further. It's only a matter of time until we see ChatGPT levels of access running on a quad core laptop totally offline. And once that happens, all such a system would need is the correct tooling on top of the AI model "brain" to make it usable.
And beyond that, what if you could have an AI model on an ASIC-style add-in card? Where's their moat then?