In town hall / all-hands meetings, the question of philanthropy (or other moral issues, like environmental stewardship) came up a LOT during the 5 years I spent at Apple.

The response was almost always "we're not looking for recognition for our good deeds, so that's why it may appear as if we're not doing much".

That's why it took so long to get a public-facing "Apple and the Environment" page; philanthropy does not come out of the marketing budget at Apple.