As a general rule, the jobs you listed aren't making $120k+. The ones that make that money are working long hours with poor conditions. Developers making $120k are very privileged compared to labour roles
All the other jobs I listed have a lot of overhead. I think barbers pay 200-400 / mo for their chair or a lot more if they are covering rent. Landscapers have equipment, maintenance and fuel. Steam cleaners have equipment and fuel.