It is all in the psychology of humans, you have a kid and he keeps asking for this expensive toy and you are like no, too expensive, is not worth it, you hold on to the money, your kid has an accident and could die, but he survives, what do you do?? Without thinking you buy him the toy, screw the money you love your kid, you will expend that money, our exotics are our kids, and on this weeks we felt like they were going to die, now that there is hope we will pay to save them, all of the sudden buying the dlc is worth it because players want to save their beloved kids. All of this of course if the rumor is real , so far I have seen two articles talking about it.