Well, I'd disagree with the idea that "no player was promised anything." The advertisement and selling-point for Destiny back in it's first year, and before, was, "This is a game that players will be able to experience for the next 10 years; our goal is to have a long, long life-cycle that all players will be able to enjoy from start to finish." Not exact wording, but, something quite close to that effect. I'd say they're shorting about 15~% of their community of about 7-ish years, if you take those standards into account.