This is a mischaracterization of the liability of PG&E for those fires. All of the PG&E-caused wildfires were due to inadequately maintained equipment operating well beyond its service life. The reduction of maintenance budgets to improve free cash flow and return capital to investors was a conscious decision by the company officers [1].
As you stated, PG&E was held liable for billions of dollars of compensation for the impacted people. This led to negative earnings zeroing out the profits of the previous decade [2]. Furthermore, the stock's price is far lower than it was during the hayday of deferred maintenance.
Since the involvement of California state government in PG&E operations, maintenance has improved dramatically. Furthermore, PG&E again has positive earnings, demonstrating that the long-term viability of the company is improved with adequate maintenance budgeting.
Now to address the counterfactual, "the fires would have happened anyway": no. The leading cause of wildfires in California in general, and impacting people and infrastructure in particular, is electrical equipment. This is empirical; after PG&E began cutting power during high-fire danger days, the number and severity of wildfires dropped dramatically [3].
1. How PG&E missed its chance to prevent the Camp Fire: Damning report on utility’s negligence, https://www.sacbee.com/news/california/fires/article24357122...
2. Pacific Gas & Electric EPS - Earnings per Share 2011-2025 | PCG, https://www.macrotrends.net/stocks/charts/PCG/pacific-gas-el...
3. Human-caused ignitions spark California’s worst wildfires but get little state focus: In 2019, utilities turned off electricity during high-wind events, and California had its mildest fire season in eight years. Was that a coincidence?, https://www.sandiegouniontribune.com/2020/01/05/human-caused...