Different people are motivated by different things (ie what gets you up in the morning may be different than what gets me up). Some do it out of inherent passion for whatever art they are pursuing, some to prove a point to others, some to prove a point to themselves. Some believe they have an obligation to humanity, others to just their family. Not my place to determine who is right in this. Whatever motivates these people often results in me being a net beneficiary of whatever they built for society that made them billionaires.