Earlier quoted context omitted.
I am curious to the mechanics of how the accounting situation arises that an insurer would benefit from taking on more liability for less revenue. The entire business is heavily regulated and based on accurately accounting and pricing risk. It seems suspect that a regulator would allow such an obviously mispriced insurance product.
They are not taking on more liability. The insurance company now has no responsibility to repair the insured vehicle so they have less responsibility. I suspect Collision insurance is very profitable compared to liability.
I expressed surprise that collision/comprehensive + liability can be cheaper than just liability alone, since, on the face of it, the insurance company seems exposed to more losses due to possibly having to pay the insured for their car damages.
In my comment, I wrote liability referring to the insurer’s liability for paying to fix/replace the insurer’s car, not liability as in auto liability insurance where the insurance company pays others for damage you cause to them.