I get its a license of use and not actually buying anything. I also get the lawyers wrote a very good disclaimer (EULA). However there is a concept called Past Practice. Despite what they in the "contract" say they can do, its what they have done that can be the legal issue (not that I'm say in a law suit would be valid or necessary). In the past games generally only updated to fix glitches, not to re-write the entire gameplay; to add to or, in this case, take away game modes. In the past this took the form of a new game in the series. IE:Destiny 2. People still think they have the same game when in reality its Destiny 2. Its clear that by not buying TTK players will have a reduced game experience. This cannot be denied. In my case having purchased the "licenses" to play TTK I have been feeling a reduced satisfaction due to the fact I've been thus far locked out of higher level strikes that I enjoyed just 2 weeks ago. Yes Bungie is free to change their game in any way they choose and we as consumers have the choice of not buying future Bungie titles. The Bungie name has been tarnished and I don't think they care.