I like to disagree. There are other ways than to continue that pyramid scheme (which you do state as the "only way"). We could work on getting rid of "unnecessary stuff" and focus with the workers we have on the necessary. E.g. Traveling via plane or cruise ship or buying a new phone every year, a bigger tv every two and gigantic cars could be stopped. Let's keep phones for 7 years, make vacation in our own region, country, by train, share cars. That could free a lot of working hours used to manufacture that stuff to put into the more needed professions like infrastructure maintenance and care work. Will that happen? I don't think so...