It also re-affirms the business model of creating a super-cheap yet capable development platform, and then not attempting to extract max profit from it.
I'm not really sure you could call that a `business model': the Raspberry Pi Foundation is a charity, so by definition they aren't out to make a profit. I'm not sure the Raspberry Pi would even exist in the first place if a for-profit company was responsible for making it. It certainly wouldn't be so cheap, and as a result, unlikely to be so successful.