The network effect is way weaker for LLM's. Switching from AWS to GCP or Azure is at least a multi-month project for an engineering org, if not completely operationally impossible. Switching LLM providers is at worst asking your engineers to install a new coding agent client, and at best switching a URL and API token in your config file.

Definitionally, from the product they claim to sell, you could just ask Claude to help you migrate to an open source model (if you have the hardware or if you are ok with a subscription) with very little difficulty in the scope of a single conversation. The product they're selling is capable of helping you stop using it. And there's very little friction to use other products too, unlike linux vs mac vs windows, where program compatibility is not as trivial (although with WINE, Rosetta, and WSL, it is actually decently easy nowadays). In this case, you're just calling out to an API with a harness. And even their harness is capable of using open source models.

I feel like it's different from all other cases because it's the first product which can literally obsolete itself, lol. It can show you the door and walk you through it if you ask it to.

If Linux (and BSD) didn't exist, imagine how much money Oracle, Microsoft and Apple wouldn't made on servers

Linux is threat to Windows server.

Regarding moats: it's been said by everyone else, but it doesn't seem like Anthropic has a moat. Everyone can easily switch from Claude to Codex, OpenCode, Pi, or any of the other zillions of harnesses. They can even have Claude do the migration for them if they want and it will oblige – that's what I did when I canceled my Claude subscription.

The idea that hardware and compute is their moat is interesting, but open/local models become more capable each week. As I write this, I have 3 instances of some no-name model working on 3 separate worktrees on my M1 Mac Studio. It was viable for me ages ago, and I'm not an AI enthusiast (I just happened to have bought a Mac several years ago that can run these models). I haven't paid Anthropic or OpenAI a cent since the early part of 2026.