Actually, there is no part of being obscenely wealthy and well known which includes helping out those less fortunate. There are plenty of obscenely wealthy and well known people - who may or may not help out at all. And there are plenty of poorer people who see it as their pleasure to give some help, in any small way they can.
Assume if you will, that there are 500,000,000 (500 million) people on earth out of a total of 6,000,000,000 (6 billion) who can easily afford to donate $1.00 a day without feeling the pinch. If each of the 500m people do donate that $1.00, you would raise $500m, a day. Multiply that by 365 days you will raise $182,500,000,000 - in other words $182.5 billion a year. Imagine that. And most of the 500m people are just middle income earners.
So, I’m sure you are amongst those 500m who can afford to give $1.00 a day right. Have you donated your $365 as part of being a middle income earner yet?