> From what I understand, the concept of a "legally binding promise" is even more fuzzy across the jurisditions than that of a "simple" copyleft license. Could

> From what I understand, the concept of a "legally binding promise" is even more fuzzy across the jurisditions than that of a "simple" copyleft license. Couldn't you work around this by granting usage rights now that you're only allowed to exercise in three years? Contracts with specified durations are quite common, including those whose start date is in the future (like, renting a booth or a flat for a specific duration).