Software is easier to produce, sell, and distribute than any physical product. You don't have to worry about warehouses filled with unsold inventory. You don't have to worry about quality control and returns. It still blows my mind how much easier it is to run a business that deals with bytes instead of atoms. The OP talks about software having no copy protection, but Amazon sells DVD players and cordless drills for $30. Imagine for a second how hard it is to compete with that. Competing with Google or Microsoft or some startup is a walk in the park in comparison.
In software the hard part is making an excellent product. And let's face it, that's where most people fail. It has nothing to do with monetization.