Because the things that can't be changed are good. Namely, lots of empty land to expand into, near the coast for shipping, good geo-position, temperate weather,

Because the things that can't be changed are good. Namely, lots of empty land to expand into, near the coast for shipping, good geo-position, temperate weather, sparsely populated but still close to a city and airport. We can expand the road and the state/fed gov will sell SpaceX the wetlands to cover them with concrete if necessary.