Even economists themselves finally admit that retraining is the missing link in the global trade model. So while jobs go, people don't transfer into other well

Even economists themselves finally admit that retraining is the missing link in the global trade model. So while jobs go, people don't transfer into other well paying jobs. Instead the good jobs are replaced by worse paying service sector jobs. So that theory that people will get new opportunities which are as good, or they can transition into is not valid. Now if the service sector jobs go too?