If all companies fire 50% of their engineers, how will anybody find similar new jobs? In an ideal world software productivity doubling WOULD be a huge boon for the economy IF companies used the increased productivity of their engineers as a way to manage tech debt, R&D and other issues that were put in the backlog because historically there were no resources for this. In reality all companies look at increased productivity as a source for layoffs which does not translate in higher output but the same output done by less people. Which is a net negative because now you have 50% of all engineers without a job and no discernible increase in quality of deliverables.