More broadly, that's why I put 'everything' in quotes. There will always be cutting edge workflows that require the power and cooling you can only get on a desktop or server, but that's a minority of a minority.
There are plenty of people who want to run multiple VMs, edit/render 4k+ videos, edit large audio projects, do semi-complex data analysis, or any of 100 other tasks without needing to choose power vs portability, or manage multiple devices.
1) Giving a bit less than half of it to the government and getting nothing, or 2) Giving all of it to Apple and getting a MacBook.
Works out to an effective 35+% discount on every business expense.
Or even if you are working on model that is on the server you still need to have good specs in order work with it.
Like 3D rendering? Or deep learning training?