Going metric isn't economical in the US as it has been elsewhere. You can't expect all the individual businesses to do something that isn't in their interest,

Going metric isn't economical in the US as it has been elsewhere. You can't expect all the individual businesses to do something that isn't in their interest, and in general, when you've got this big a country with a single measuring system, it's not going to be in an individual business's interest to retool. This was not the case in most other places, where there was a lot more pressure to standardize because you might have a few different measuring systems within a few hundred mile radius.