[graiz]

Loans get paid back... donations don't. An organization that takes donations (like wikipedia) will have to keep asking for donations... while an organization that has a debt can take the time to figure out a revenue model not driven by ads to allow them to repay the debt.

[crusty]

Wikipedia's average donation is tiny. That's why they keep asking. The way you've written this it suggests that if instead of giving wikipedia a $2 donation, we have them $2 no-interest loans, weed be helping them prepare for the future and they wouldn't have to ask for more donations (or loans) from us. That's not how it works.