How about Bill Gates? Nobody could have seen him being the most prolific philanthropist of all time back when he was leading Microsoft in the 90's.
I don't know if those are orthogonal though (ruthless business leader and philanthropist). Andrew Carnegie is another great example.
Those qualities aren't necessarily orthogonal, but think about what it implies about how you should treat that ruthless capitalist.
Every dollar you gave to Bill Gates ended up being rather effectively used for good.
You. 10 years from now. Mark my words, remember this comment, come back here and tell me if you've changed.
Poster probably won't change even in ten years, see research by Dweck. Fixed mindsets are a powerful negative thing. I salute you for believing in the right thing, a growth, malleable mindset supported by modern neuroscience and neuroplasticity!
I don't doubt I will change, but his or her comment was implying people can radically change and do a complete 180. In my experience in life so far, that almost never happens and I was asking for famous examples.