I doubt these no.s are really true. I feel these numbers are extrapolated after a survey over a small no. of people in a locality. H1b workers are not allowed

I doubt these no.s are really true. I feel these numbers are extrapolated after a survey over a small no. of people in a locality. H1b workers are not allowed to do freelancing. They need to have a regular office job. Major chunk of technology workers are people working on H1b visas. if not H1b, there are many people who are waiting for green-card approval. This takes a long time and I don't think they can work as freelancers as well.