As usual when big tech talks housing, "Bay Area" actually means "Peninsula and west SJ". The other two-thirds of the Bay, bedroom communities and cheaper areas - who cares about those? Perhaps there's something about say, the tri-valley area that makes it unacceptable for office buildings that I don't know?
Dublin has doubled in population in the last 20 years. That sounds like an area that is pro-growth, where a company could have a useful impact without getting shot down by NIMBYs every step of the way.
I'd dig up stats on the biggest employers in Dublin, but can't seem to find any, so we'll go with Pleasanton as a proxy - Kaiser, Safeway and Oracle. Wew. We got one. Too bad most of tech doesn't even know the East Bay (much less the parts of it past the hills) even exists.
There are options to deal with the housing problems, even staying within the bay. Companies simply aren't pursuing them.