I would agree.
Working for yourself often means working harder, but you get to reap 100% of the benefits of your hard work -- whether that's working on a farm at subsistence levels (such as this crew who love their life) or working for yourself in any other entrepreneur-adventure.
When DH and I were in the US, working for others, we would work an average of 35-40 hr work weeks, being paid what our jobs were paid, as determined by those who employed us. We would receive benefits as they determined, too. And holidays. And sick days. And everything else.
Being frugal, we lived very well on our relatively low incomes and didn't want for anything. . . except freedom. The opportunity to succeed and fail on our own merits. The opportunity to reap all of the rewards for our hard work.
We moved to NZ. We bought a business. It's my dream business. I love it. I work an average of 60 hour work weeks. Dh works about 40 in the business and manages our household. We currently make less than we did before, but we have the opportunity to earn a lot more as we build our business. It's only been two years, and we have secured for ourselves a great income so far, with so much room to grow (the four arms of our business currently are only at 1/3 capacity, and as I discover and train more resources, we'll be able to sustainably grow -- meaning that we can triple our current income, which will be double what we were making after 15 years in industry in the US! And, we plan on franchising, which means basically unlimited potential.)
So, yes, I do work harder. But I am out of the rat race. I'm doing really rewarding work that I *love* and reaping ALL of the benefit of that work. And, I'm able to help others do the same with my business, as well as provide for some folks who simply don't want to run their own businesses (maybe only want to teach yoga part time, etc).