I'm always confused why the shareholders in these tech companies don't throw a fit over the very expensive locations that the big SV firms occupy. A huge chunk

I'm always confused why the shareholders in these tech companies don't throw a fit over the very expensive locations that the big SV firms occupy. A huge chunk of their engineering talent comes from the Midwest and overseas, so why not relocate to Nebraska? I suspect the upper management really doesn't want to move because they already have nice spots in SV.