Not quite though. You can install Claude's apps wherever they're supported, and maybe even fiddle with the source code (I'm unsure). And you can use any other coding apps that you want. The only real restriction is how those apps are allowed to connect to the providers' services, which are running on their servers, etc. There's a movement from "my local domain" to "their remote domain", and they're allowed to have full control of theirs as you - would prefer, I think - full control of yours.