This wouldn't be the first time that the cost of software radically dropped. It happened back during the early 1960s for the first time when IBM introduced the System 360, which included backward compatibility for the 1401. Prior to this point, the maximum lifespan of software was tied to that of the computer in question. The software would be re-written for the next architecture, every time a new computer was purchased.

The advent of the PC, and the appearance of Turbo Pascal, Visual Basic, and spreadsheets that could be automated made it possible for almost anyone to write useful applications.

If it gets cheaper to write code, we'll just find more uses for it.