I did some research on marketing strategy, adding to the discussion, there are seven Ps for marketing: product, price, promotion, place, participation, positioning and people.
People:
To be successful in business, you must develop the habit of thinking in terms of exactly who is going to carry out each task and responsibility. In many cases, it’s not possible to move forward until you can attract and put the right person into the right position.

A good example ,in his best-selling book, “Good to Great”, for Jim Collins, he discovered the most important factor applied by the best companies was that they first of all “got the right people on the bus, and the wrong people off the bus.” Once these companies had hired the right people, the second step was to “get the right people in the right seats on the bus.” So, to be successful in business, you must develop the habit of thinking in terms of exactly who is going to carry out each task and responsibility. In many cases, it’s not possible to move forward until you can attract and put the right person into the right position.
So, having the right people is essential because they are as much a part of your business offering as the products/services you are offering.