I think this is a combination of issues: USB-C's ecosystem was confusing and good products never materialized, or if they did nobody could find them in the sea of junk. The lack of hardware updates, which seems to have started with the 5-10% performance bumps Intel piddled out in the absence of competition from AMD from 2011-2017. Most of the CPU's and GPU's that could have been used frankly weren't much better than…
Now, I'm in the position of get a worse (in SSD space + other things) machine for more money or get hackintosh