As much as I appreciate this comment, it's less limited to software than you paint it to be. When you start digging into how businesses actually make money, you quickly realize it's rarely what it seems.
Many gas stations that are wildly successful, such as Sheetz and Wawa, don't make their money selling gas, they make it selling food using gas as a commodity to get the customer in the door. Likewise, McDonald's doesn't really make its money selling food either, although this is a lot more complicated and heavily involves real estate and franchising.
In other words, nothing is really as it seems when you peel back the veneer. Software just happens to be relatively new and is poorly understood by most people.