The process of ideating and developing products (including software products) falls within the domain of Complex Systems. A complex system is a dynamic network of interactions, where the behaviour of the system as a whole may not be predictable based on the behaviour of its component. A model such as the Cynefin Framework which was developed by David Snowden has helped with our understanding of complexity and our approach to addressing complex real world problems.
A very long time ago, I was coaching a Scrum team where a team member was on an hourly contract and was regularly billing 70-80hrs a week. Among many other ideas that I discussed with client, I advised my client was to transition this consultant away from an hourly contract to a full time with a full-time (40hours a week) contract. With this new arrangement, my client can recruit two full time consultants instead of one person at 70-80hrs week.