How does a massive chemical accident, or explosion that destroys a manufacturing facility, creating huge civil liability, "save money?" Or why they wouldn't want to learn from the mishaps of others to avoid massively costly accidents themselves.
TFA says the chemical industry supports the mission and role of the CSB. It's trivially cheap in the scope of the whole industry, so they could just support it themselves.
The CSB isn't a regulator. They don't write rules or impose fines. They investigate accidents, identify causes, and things that could have been done to prevent the accidents.