Slave plantations also lead to the construction and donation of a lot of public buildings in the UK. At the time these would have been a major improvement in the lives of those who benefited from them. However, it's not a strong argument for continuing the practice.

I'd honestly rather get rid of advertising. The industry has shown itself far too happy to promote addiction to increase revenue. The fact that some "good" tools have been funded by it

Psychological manipulation in general should be much more regulated than it is. Tobacco, gambling, and advertising are the first that come to mind but the food industry is often just as bad, if not worse.