[waspleg]

There is such a thing as more than one kind of obligation. Are they LEGALLY obligated to share? Likely no. Are they MORALLY obligated? That's definitely up for debate.

EDIT: The parent does not deserve down votes because you disagree with their opinion. Grow up.

[wodencafe]

Thanks, there seems to be a lot of downvoting on HN based on disagreement rather than substance :(