Did you mean the high end, or the low end?
A college dropout can make a killing in Silicon Valley, if they are also: a talented software developer.
OTOH, some of the other dropouts might end up working as BART train operators, who seem to make between 12 and 15k/yr, which is likely for full time, in a city where it costs about 1/4 of that just to scrape by on a monthly basis.
It is not right to employ people at a wage that they cannot possibly subsist on. These people all ended up as bart train operators for one reason or another. Maybe they were lazy. Maybe they got shafted in life. Maybe they're dumb. But does that mean they should be paid a substandard living wage? No.
Meanwhile the luckier, more industrious, or combination thereof, are making over 10x the amount of the lowest paid workers.
Min wage needs to be raised, a lot. Look at Australia.