It's a possibility. That way it makes exotic weapons a little more unique and not everyone has every single exotic. I see why Bungie would do that. Although I don't agree with you that Bungie literally went in and [i]rigged[/i] single account to get certain exotics. Maybe once you get an exotic for the first time,you're more likely to get that exotic again but there's till the possibility of getting one you don't have. That would explain the fact that some people have all of them.