But there might be an apparent magic.

I completely agree, the risk has to be taken seriously. My point is that just because you can formulate the prediction "the AI will take over the Internet and use its resources" it doesn't make it more likely. You personally can't take over the Internet and if the AI isn't much more intelligent from the very beginning then it won't be able to do so either.

But scale up the expedition corp and the demise of the Rome is more and more probable.

It can't make use of magic to acquire additional resources because magic depends on additional resources. It has to use what it has under the hood.