[jedberg]

The start of a fire is a criminal investigation, not a root cause analysis. Billions of dollars are on the line, because different groups have to pay out depending on how/who started the fire.

In this case there was no criminal liability. That means all the fire insurance companies will have to pay out of their own pocket.

For other fires, PG&E was found liable for not maintaining their power lines. They will probably have to declare bankruptcy, because the fire insurance companies will all sue them to cover their payouts.

There is a different team that does RCA and puts in place new policies or proposes new regulations to prevent whatever caused the fire, but what you're seeing is the result of a criminal investigation (although they do work together in collecting evidence).