nah... we do still have the largest tech industry in the world... and it takes true mathematical ability to set foot on wall street. Even if you combine both you're dealing with so many conversions a day it would become second nature. Considering how much in-sourcing/out-sourcing is being done pretty much everyone working in corporate has to deal with it.
You could see the flames from a 1.609344 kilometres away
That's why the Americans kept the retard units
Tbh I don't blame them, even if it makes conversions living hell.