I never said that was my definition of "professionals". That is you being snarky.

The common themes to wanting a Macbook Pro is that you want more grunt and more I/O, and you have the money to pay for it. A common need among this group is exchanging large data sets, and not being willing to use iCloud/Dropbox/Google Drive to do it for a variety of reasons, like speed, convenience, confidentiality. These are also people who often want to do this in a variety of locations.