I actually have a homebrew Linux AR setup that I use heavily and absolutely think it will be the future (although it will be similar to the smartphone where you get a combined form factor and paradigm shift that people think are both connected.)

Good AR glasses are already available and combined with modern LLMs you can have normal people thinking about computers the way we do. This will feel less invasive than smartphones do currently while being able to do much more.

I'm absolutely certain Apple will not survive the transition though.