The tech sector as a whole is in a period of massive expansion. It is basically assumed that any well-run tech company needs to be perpetually hiring anybody su

The tech sector as a whole is in a period of massive expansion. It is basically assumed that any well-run tech company needs to be perpetually hiring anybody sufficiently qualified for the endless business opportunities that lie just on the horizon, and there's a small number of expensive cities where it is prudent to do so. Some day the business climate will cool and the realm of new tech growth won't seem as limitless. When this time comes, big profitable tech companies will continue their drive for bigger profits, and they will turn to cutting costs rather than driving new growth. When cutting costs comes to tech, plenty of established companies will decide it's time to head off to a smaller city with lower rent and lower wages - or atleast some of them will, and eventually wages and rent in silicon valley will start heading downwards from its current place in the heavens.