This is very true, but at some point you need to value people at a base level. Warehouse work is grueling and you can easily get hurt. 16 /hr, which is the base of an Amazon warehouse worker, is below a livable wage w/o kids in much of the country.
There is what you can get away with and what is right. At some point you just have to do what is right.
but an engineer can produce a system which generates millions of revenue a day. a warehouse worker, cannot scale this way.