The useful part is that each of these has a certain business model, and depends on ability to hire and/or retain people to do it. My own company is a combinati

The useful part is that each of these has a certain business model, and depends on ability to hire and/or retain people to do it. My own company is a combination of me doing expertise consulting and the rest being experience consulting, and we don't do execution, as it's a commodity. Running a McDonalds is different from running a fine French restaurant. The McDonalds likely makes more money, but requires a lot more scale. It's not very satisfying if you are a chef.