There has, if you aren't in the US, Liberia, and Myanmar. Sure, you get a few small outliers (Canada and probably Great Britain still have a mix of measurements

There has, if you aren't in the US, Liberia, and Myanmar. Sure, you get a few small outliers (Canada and probably Great Britain still have a mix of measurements)... but mostly, the world uses Metric. This winds up being in the background in the US. Medicine uses a lot of metric. Sciences generally use it to be standardized. Soda is sold in liter bottles. But there hasn't ever really been a push to actually adopt metric, which basically needs to start from the government. Road signs do not list metric and standard distances or speeds: Food is still sold in pounds and gallons as no labeling law has been made. Weather reports don't mention celcius. Without a push from the government itself, I can't say there was ever really and adoption at all.