How are smartphones not Personal Computers? Less than 1% of the code and hardware on an iPhone is cellular phone.

They meet anyone's definition of a personal computer. You can draw a straight line from the first Macintosh to the iPhone. The fact that they evolved out of the phone form-factor and are called "smartphones" may be confusing but it's also irrelevant.

Wait until you have VR head-mounted-display with 8k resolution in each eye. Carmack will deliver!

Every time I travel (or am away from home for over a day straight on a weekday) I get a bit of anxiety from having to work on a laptop because it is so much less efficient. It is nearly impossible to be a company with say a couple employees total & stay competitive in saturated markets when one of the employees is on a laptop which lowers their working productivity by about 50%.

As a bonus, on my last trip, my laptop's hard drive had a corruption issue which I couldn't easily fix without wiping the drive. I should have had a backup laptop with me. Luckily I was able to borrow my wife's Windows Surface Pro & was flying back the next day after my laptop broke. But from my fear of working on laptops I really think the people who mention doing all their work from the phone are either crazy or they are thinking far into the future or they count chats / meetings at coffee shops as encompassing most of their work. :)

Granted, cell phones might eventually might get much better with keyboard and display hookups, but even the frequent moving them around (and the smaller size causing hot components to be closer together) makes them more likely to eventually run into some sort of issue than a desktop computer which just sits there & has more space to dissipate heat and such.