It's not meaningless. If I give something away under certain conditions, I'm not forcing anybody to adhere to those conditions. Instead, if they choose to adop

It's not meaningless. If I give something away under certain conditions, I'm not forcing anybody to adhere to those conditions. Instead, if they choose to adopt those conditions, they get free stuff from me (and a lot of other people.) In other words, it's an incentive program, not a requirement such as a law or regulation.