iPads are used almost everywhere across a very wide range of businesses and professions as I've experienced. Not sure where you are getting this idea.
I'm thinking more along the lines of actual video editing, photo editing, etc on the device, which it can do, but not well compared to actual desktop programs
It's running a closed ecosystem, has no ports for external monitors or SD card slots, etc, and costs more than a Surface Pro 3, when it has half the ram and is far less powerful