Yes, that's the beauty because the upward mobility income-wise is uncapped in self-employed fields, including those you mentioned. I encourage Pakistanis to do their business because, if you work, for example, at Deloitte or Ernest and Young, you start at $ 70,000 yearly and some benefits. But in your own business, you can set up multiple streams of revenue that can generate the same amount each as you would if you worked for a corporation. The problem with working for someone else, you never own the business or have any stake in it.
I have known great salesmen that helped businesses develop from scratch, and once they reach a certain income level, they are let go. They are given a pink slip for immediate termination and collect unemployment from the state for a few weeks. The worst part is the business they helped develop they have no equity. So even though you hear about Uber and all of them giving equity shares, remember the big funders are given that privilege, and often in small businesses, besides the partners, regulars do not get anything.
Working as self-employed gives you specific mobility, freedom, and the ability to diversify into different fields.
My younger brother works at Deloitte's Chicago office. What he makes in a month, I make in 1 week in just one of my businesses. I told him to leave and work for me, but I often hear he wants a secure job. I blame this thinning on the education system that teaches you to get a degree, work for a big corporation with a 401K, and get a medical/dental/vision plan. Schools neglect to mention that you'll work like a dog with nothing to show. I was of that opinion as well when my father asked me to develop the family business until I was let go after working for four years for a corporation with a Master's in Finance/Account concentration. I gave him an example of a Hispanic client of mine in the country no more than a handful of years, setting up a lawn care business that employs over 150+ individuals with multiple vehicles across the state of Illinois and driving around a Ferrari while his clients are in a budget vehicle.
My father and his family have always worked for themselves and never for someone until my brothers and me. I remember during a party we were invited to, and around the table, everyone was asking what you do; some said doctor (and they started their talks of making money for a few mins), then some said lawyers and engineers once it came to my father he said I employ all of you.