This is why they are pushing more for non-tech folks to use their products with desktop apps. They are not going to switch on a whim.

I mean there is a minor moat. Most people don't enjoy switching providers or models. If you can get people to trust you'll stay near frontier, they'll stick around even when you aren't the best. Claude is a prime example of this

I switch models all the time.

/model in OpenCode

There is no "moat" for me. Using the standard chat applications as a normal conversational/question has a little bit of moat as its able to cross reference existing conversations, but I disable that mostly anyways to prevent as much data retention as possible.