How does the fact that RPi produces a physical product factor into this? If I contribute money to a charity that distributes that money directly to people in ne

How does the fact that RPi produces a physical product factor into this? If I contribute money to a charity that distributes that money directly to people in need, then I expect a high portion of that money to go to charity, but I don’t know that that is a fair expectation when most people “donate” to RPi by buying a low margin physical product. It’s not a pure charitable contribution to buy a Pi. But maybe I don’t understand how the costs are broken out between the foundation and RPi Trading.