talking specifically with car companies, you can look at volkswagon faking their emissions tests, and the rise of the light truck, which reduces road safety for the sake of cost cutting
The emissions test faking is an anecdote, not an indication that this is the average behavior of companies or the dominant behavior that determines their overall impact in society.
As for the growing prevalence of the light truck, that is a harmful market dynamic stemming from the interaction of consumer incentives and poor public road use policy. The design of rules governing use of public roads is not within the domain of the market.
