> There are no switching costs for users to move to a new model.

This depends on how many proprietary APIs are in the way of the model itself.

Or whether the model still works the way you want. For example, a lot of people were pretty unhappy with Claude 4.7 and preferred the way Claude 4.6 worked. If you're relying on a service, then you're stuck with whatever changes the provider decides to make. And the provider is chasing a demographic that's profitable, if you happen to fall out of that demographic then tough luck.

But if you run your own models then you're not subject to anybody's whims anymore. You have full control of how your software works and what it does.