I think the problem is that it's not generally as clear cut as "company does bad thing". Your example is that apple relies on child labour, but apple doesn't directly employ children (probably) it was one of their suppliers, or one of their suppliers suppliers. So who actually knew, did employees at apple know and did they attempt to put a stop to it? Was the entirety of apple aware or just one rogue employee? Did their supplier even manufacture apple products using child labour or was it products for a different company? Basically what I'm getting at is that it's a nuanced topic and if you are to paint it with a broad stroke of "companies that have done something bad" then you can put almost every company on that list.