My first reaction to his arrest was joy and then I saw comments about him getting "beat up in jail" to put it lightly. People who say those kinds of things are no better than him. Possibly worse. The solution to dealing with people like him is to be able to separate them from society or fix the system so it can no longer be exploited so "easily". He may have hurt a lot of people but it's been through proxy as far as…
Like most businesspeople he probably adopts the ethos of getting away with what he can within the law, and possibly bending the law where he can get away with it. Google's offshore profit laundering system is an example of a similar approach.
I think it's a mistake to believe this guy is all that different from average in his moral behavior. Most of us never get the opportunity to price pharmaceuticals, but chances are most business owners don't simply give away the product to those who want it.
Differentiating between customers wanting and needing a product is a slippery slope.