> Tech is squeezed into hyper-expensive cities because, as illogical as it may seem, it's where a lot of workers want to live.
That's a factor, but I think an even bigger set of factors is:
(1) industry-focussed venture capital and related support infrastructure (particularly for startups) prefers proximity,
(2) there are benefits to proximity to other firms in the industry other than capital and support structures, e.g., it's easier to pick up experienced workers as you expand if you don't have to get them to relocate,
(3) With the money flowing into the industry, wherever it is concentrated is going to become expensive, because the number of dollars chasing housing and other goods is going to be high compared to places it isn't concentrated.