In Marc Andreessen's case it really, really makes sense though, at least from my POV.
How is it an excuse for a technology company to ask for more money so they can do more business? Their business just happens to be giving people technology.
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To put it in clearer terms, Marc Andreessen is with the crowd that has the most to gain from charity contributions. He's got his fingers in all the right pies to make a lot of money from the results of more charity activities. He can is described as "a co-founder of Ning, a company that provides a platform for social networking websites. He sits on the board of directors of Facebook,[5] eBay,[6] and Hewlett Packard Enterprise,[7] among others" according to wikipedia and he was apperently involved with Free Basics.
You can read more about this here:
https://en.wikipedia.org/wiki/Marc_Andreessen#Criticism
The Free Basics thing is exactly the worst possible thing for any third world county I can think of. Getting spoon fed the "right" information from an overload mega-corp.
I think it's fair to say that his buisness is collecting data on people and manipulating them and that "just happens to include providing technology" which is one of the things he can do by finding selective charities.