I think I agree with basically your whole comment but I'm wondering if you could explain what you mean by "software-only AGI". Obviously all software runs on hardware, and creating specialized hardware to run certain types of software is something the computing industry is already very familiar with.

In the far far future, if we did crack AGI, it's not impossible to believe that specialized hardware modules would be built to enable AGI to interface with a "normal" home computer, much like we already add modules to our computers for specialized applications. Would this still count as software-only AI to you?

I've held for a long time that sensory input and real-world agency might be necessary to grow intelligence, so maybe you mean something like that, but even then that's something not incredibly outside the realm of what regular computers could do with some expansion.