[smsm42]

The problem is not fear, the problem is unfamiliarity and cost. If US company decided that all company communications from now on would be in Mandarin, it would be a mistake - not because Mandarin is particularly bad or frightening, but because most people in US would not know how to speak Mandarin and thus would not be able to participate in communication without very substantial effort.

Code is a form of communication too, and it must be done in a way that is understandable to fellow developers, otherwise costs of development raise immensely and the whole project comes under threat.