I would worry that something breaks after warranty expires and the whole computer can go out of the window. With regular good old desktops you can just replace the broken part. With such special custom made hardware it is sometimes impossible. For example the macbook airs have non standard ssd that is not replaceable, so when the disk dies, whole notebook is done...
I used to repair my laptop and desktop, but nowadays I'd rather just go to the Apple store and have it swapped out and not waste time for parts. The share of the market that wants repair-ability is probably just not high enough to care about, at least for Apple.
Edit: if this is for business or professionals, then I don't understand why they would make something like this either though. I assume their highly paid staff has market data and whatnot, but I share your opinion that it's ridiculous if this is supposed to be for business use.