Lot's of peps have/are canceling their subs bc of the latest shit they pulled with reflex. (a recent post @ BPS says they just cancelled and want nothing to do with them again-they even deleted all their tsr cc!)
Deleting the custom content they ownwon't hurt TSR one little bit. I have some custom content I downloaded from TSR still, and I don't see the point of getting rid of it, it won't affect TSR at all. Cancelling subs will, but only when the time comes and they don't renew. (TSR is pretty clear that if they kick you out, you loose your money. If you decide to leave on your own, they keep your money.)
I don't know what I'd do if I still had a paid sub there. I could image that no one person could really download enough to affect their servers, so I don't know what someone can do to hurt them right away. But, if anyone decides to try to go download crazy, they should stick to SA's and below. Why make more money for the FA's.
But, losing folks as customers is never a good deal for any business. And, if people get the word before they subscribe, that's money they won't be getting, and if people stick to not resubscribing, then week by week, month by month, they'll start to see a dip in their money.
I just hope the numbers are high enough. A few dozen folks saying they'll cancel or not renew isn't going to hurt them much.