Your taxi crashes because the driver skipped brake maintenance and his insurance doesn't reimburse you for your hospital costs because commercial transportation isn't covered. Sure would be nice to have some minimum requirements for taxis.
Much in the same way tobacco companies knew for a long time how addictive and harmful smoking was.
And how Facebook knows they let their advertisers scam their users, and the way social media was pushing teen suicides higher. They knew and kept pushing policies which made the problem worse. All so they could collect bigger compensation packages.
Lead in gasoline is bad, but in general I think individuals are perfectly capable of determining whether they are willing to risk a taxi ride.