Believe me, if Chevron could get out of California, it would. We're stuck there, though. Should have sold out years ago, but then again, maybe they tried. Consider this - marginally profitable (it at all) heavy oil resources with rapidly declining production and reserves, facing $$$$ decommissioning costs. However, there's also our headquarters office of upper management who love to mingle with the SF art crowd and the Berkeley wine-and-cheese set (who not-so-secretly hate everything about Chevron).
As for GOM, yes, this is just another of their many keystone kops business blunders. It accounts for them dropping in less than a decade from most-envied and best-funded BU in the company (well, DWEP) to surviving on minority farm-ins to piddling NOJVs. Oh, and they gave us alumna Liz to head "exploration". Strange, as no one in the Shelf GOMBU ever explored for anything other than getting out of Covington.