Re: It's called a laptop for a reason
In airport lounges, hotel corridors and occasional bars, can I prop it on my lap? I've had several tablets and the Surface Pro was marginal, all others inadequate and that's before I start cursing the keyboards.
Aren't convertible devices inherently topheavy? In a real laptop, the guts of the device are in the base, and the screen is just the screen. On top of that, they often don't have (or need) touchscreens, making the lid/screen that much lighter.
On a convertible device, the keyboard is just the keyboard. The guts are all in the screen, and it necessarily has a touchscreen. They could add weights to the keyboard to balance it, but then it gets heavier to lug around.
I have an ultraportable laptop that isn't much thicker than an iPad, and it has the added advantage of having the fragile screen on the inside when it's closed, protected. I've never wished I had a large tablet while using it... of course, part of that may be that I don't like Apple, Google, or since 2015, Microsoft. I used to think them the lesser of the three evils before Windows 10.