"They knew the risks"
Everybody knew the risks. Climate science has been researched at universities and published openly.
If politicians have failed to regulate, and consumers have enjoyed the benefits of (relatively) cheap fuel and energy, why would the fossil energy companies be singled out as the culprits? People wanted the high material standard of living that comes from (relatively) abundant available energy, cheaper and plentiful food that comes from abundant nitrogen fertilizers (made from natural gas). We were all part of this.