I wanted a PC, bought a tablet. Ideally, I’d want a SFFPC plus screens that I could easily move. I’d settle for a SFFPC with a dedicated graphics card if I couldn’t move it. I’d also settle for a notebook that would allow me to easily swap HDDs/SSDs. However, none of those things are possible and/or have a good cost-benefit, so I got a tablet.
Notebooks are too clunky compared to tablets because they are attached to a keyboard and to a screen. If those parts were removable, they would be more successful. Tablets would also be more popular if you could use them as PC screens (some from Lenovo already come with this featur).
Manufacturers are moving in the opposite direction, soldering memory, and making as hard as possible to change parts.