I think it is a matter of mentality. 3 phase power in most of the world is delivered by the electric company. In that case it doesn¡¯t matter which phase you connect where.
The employees who assembly the machine probably don¡¯t care which phase connects where.
?
It is mainly US customers that need to find a solution for the lack of 3 phases at residential addresses. So they manufacture a third leg from devices like PP.?
