How much online shopping could you do from your PC in 1980? How many people had smartphones in 1980?
That's why sw devs salaries went up like crazy in our time and not in 1980.
But what new tech will we have, that will push the SW dev market demand up like internet connected PCs and smartphones did? All I see is stagnation in the near future, just maintaining or rewriting the existing shit that we have, not expanding into new markets.