The politicians restricted water of all things (over a minnow they say) and drove many out of farming in the central valley. The high speed rail needed cheap land and insiders would buy up that land but the farmers were in the way.
Now that there is oil you can bet the California politicians will block the drilling for spite as it helps Trump and republicans and the farmers.
And speaking of water, we are running out of it. And power. And highways capable of handling our growing population. The liberals have neglected or even blocked the building of urgently needed dams, reservoirs, power stations, highways, etc. Our population has far outgrown our crumbling infrastructure. Hopefully, the corrupt and negligent democrat ruling party implodes before the state does.