I recently started feeling like it might be time to upgrade my 1st gen Carbon X1 and after doing some research I found myself really disappointed by how little the laptop landscape has changed over the last four or five years. After giving it some thought though, I realized that I do virtually all of my work at one desk anyway and decided to look into some desktop options. I found that you can put together something in a mini-case with an i7 processor, 64 GB of DDR4 RAM, 2 TB of SSD, a 28" 4k monitor, a mechanical keyboard, and a high quality mouse for less than about $2k dollars.
This made a lot more sense to me than spending a similar amount on a laptop that offers only marginal improvements over my current one. The obvious trade-off is portability but I would guess that most of us here already have laptops that are "good enough" for most purposes and which could still be used as necessary.