I actually have a personal assistant, but for many tasks, Magic+ is simply better (and completely responsive 24/7, which I would never demand of an employee).

Can you give some specific examples of things that Magic+ does better than a local personal assistant, besides being available around the clock?

They are exceptionally good at getting things done. A regular person could spend hours or days researching the best way to get something done, Magic already knows. There are real scale effects here.

Well, for one, it is ubiquitous, you can ask for task in NYC or SF without paying fly tickets or waiting for it to land.

I never heard of this before but it sounds it scales better to big and small jobs, and is more efficient use of available manpower.

Say you have a huge job, or many small jobs, that one personal assistant couldn't do at once alone. Or if you don't have enough jobs at all times of the day to keep your personal assistant busy. etc..

Its kindof analogous to renting time on a server farm vs owning a pc.

Or analogous to renting time from from a fleet of at-will drivers vs owning a car. ;)