Do you think there is a reason Garleans can't use magic?

[ReiMakoto]

It's like Garleans can't use magic, so they invented magitek, which is not only just as good but arguably better.
The magic advantage of the other races has been rendered moot, as evidenced by the fact the Garleans have conquered everyone around them and built a continent spanning Empire.

Its important to point out if Magitek is superior to actual magical ability, why are they obsessed with resonant research to give garleans aether manipulation, as well as why would they bother conscripting vast amounts of magic using soldiers of other races.