Reeves has developed a reputation as a pretty generous guy over the years, frequently choosing the artistic integrity of his projects over a huge payday. This short summary really tells most of the story, in a very sad way. (Even though Keanu does approve of the Sad Keanu meme.)
But Keanu fights on and continues to be one of the greatest celebrity philanthropists around.
He really does subscribe to the idea of all people being "excellent to each other". He told Hello! Magazine in 2003: "Money is the last thing I think about. I could live on what I have already made for the next few centuries." Give or take a few hundred years. (It's true that Reeves has appeared in six movies that have grossed over $100 million, which isn't really a bad haul.)