It is unfair, because an engineer can't do the same with his expensive desktop computer that he needs for work on the other side of the continent.
Depends on the components.
>Second, a properly backed up desktop computer is easy to replace if it gets damaged,
Doesn't change the lost time having to restore. There is a reason someone travels with electronic equipment in the first place. Second, it's not if the computer has specialized hardware (again, there is a reason someone would travel with a desktop). Third, a desktop could easily be loaded with $3000 in components. Not exactly simple to replace either.