It is a difficult problem. There is a saying: ease is the disease. Seeking the easy path (which most of us do) generally leads to supporting institutions not for their moral worth, but for their ability to make our lives easier. And so companies focus on exactly that: making our lives easier.

Taxes might help. If you tax a company for their immoral behavior, the cost of their goods go up and consumers might make different decisions. But in a democratic society the people who create taxes are elected by voters who want their lives to be easy.

Maybe the best thing would be to throw out democracy and be ruled by philosopher kings who can make these decisions for us. I only say that half-jokingly.