How is it possible that Bungie didn't get in real legal trouble due to all that "vaulting" bullshit during Destiny 2?

Over the time people paid for DLCs that don't even exist anymore.

I remember very well back in the time, they said they'd bring contents back, they're just "vaulted", well, now the official continuous development is over, where is the content?

If I understand well, if the development is over, the content won't come back, this promise doesn't make any sense anymore.

I know there was a few legal problems for them but it seems they're still well and alive, how?