I think a lot of people are unaware that these models have an enormous human training component performed through companies such as Amazon Mechanical Truk and dataannotation.tech. Called Human Intelligence Tasks, a large number of people have been working in this area for close to a decade. Dataannotation Tech claims to have over 100k workers. From Cloud Research,

"How Many Amazon Mechanical Turk Workers Are There in 2019? In a recent research article, we reported that there are 250,810 MTurk workers worldwide who have completed at least one Human Intelligence Task (HIT) posted through the TurkPrime platform. More than 226,500 of these workers are based in the US."