The document summarizes different strategies used in the video game industry over time. It describes arcade machines in the 1970s-1980s that allowed limited paid play. It then discusses the "box ship and done" method of the 1980s-2000s where a console company would ship the product and rely on game sales. Finally, it outlines the "observe, measure and modify" approach used from the 2000s onward where companies study the market to develop new games people want to play both at home and on the go.