Of the companies mentioned I believe apple is the only one that does not provide their own chat bot. If they aren’t opening an interface for open ended interaction with their AI tools I think your concern is much less relevant. I’m curious if you’d disagree though.
Siri is not AFIAK a competitive offering in the chatbot space, but it is a chatbot; is it not? I guess I just don't understand your argument.
Maybe this will help: AI labs have tried out 100s of different designs for AIs and if they aren't stopped (e.g., by the governments of the developed world) they are going to try out 1000s of additional designs. Most of us who worry about AI takeover or about human extinction caused by AI do not claim to be able to tell which design will be the first design capable of taking over or of extincting humanity -- even if we had complete access to the source code and the training data and we could ask the researchers behind the design questions. (The researchers do not know either IMHO.) But once an design has been widely deployed for many months, we know that that design is not the one that is going to take over. Gemini 2.5 for example has been widely deployed since January. It has been given plentiful access to very gullible people, very desperate people and plentiful compute resources. (When a customer asks an AI to write code, then runs that code without first understanding the code himself, that is giving the AI access to whatever compute resource the code gets run on.) If Gemini 2.5 were able to take over the world, it would have done so already. Ergo, I consider it morally permissible for me to use Gemini 2.5. Now Google is not going to stop with Gemini 2.5: it will continue to try out different designs, which is why I consider it my obligation to avoid helping Google, e.g., by giving it money, which is why so far I've stayed on the free tier of Gemini.
Gemini 2.5 is not very agenty: it does not learn continuously, it is extremely unlikely that its can work effectively towards any long-range plan or devise a plan that can withstand determined human opposition. So in the particular case of Gemini 2.5 and its competitors, we really didn't need many months of wide deployment to go by before we can conclude with high certainty that Gemini 2.5 is incapable of taking over the world. But most AI researchers and most leaders in AI labs consider the fact that the current crop of deployed AIs cannot learn continuously very well and cannot formulate and work towards long-range plans as deficiencies to be overcome.