I don't totally agree with this. Prices between airlines and routes can vary dramatically to the same destination so it's not like saving 20$ will usually be the difference between the cheapest option and a more preferred option. Also if you look at situations like Volkswagen, it seems to me that neither governments nor consumers hit them very hard after their massive scandal a few years ago. I see new VWs all over the place.
I love my Volkswagen. In theory I care about emissions test cheating but in practice it wouldn’t affect my decision to buy in the future. It’s the best designed and built car I’ve ever had and so Volkswagen group brands will always be on the top of my list of cars to look at.
A couple of VW execs went to prison and it cost the company 30 billion, that feels like getting hit hard enough by governments. What more do you want?