Regardless of the initiative (could have been rural broadband) by expanding into these areas Mozilla's parent company said..
We have enough money for operations. This extra money will go to this good cause.
As someone who might donate I would hold off because they have more than enough. I could use my money directly to support a cause.
Not sure how a charity starts giving to another charity (unless that is what they specialize in). That strikes me as greedy. If you have enough don't ask for more. There are local charities who could use the money.
Their current market rate speaks for itself.