One reason is to avoid a potential boiling frog scenario. I'm already in one with Android, but there are no viable - for me - alternatives (never touching Apple and mobile Linux isn't there yet) so I'm truly stuck. If there's a chance things may start changing at OpenRouter in such a way that months/years from now I'll look back and say "oh, how I wish I'd switched providers", I'd rather switch now just out of principle than be boiled.