Alright, I get that. I've been played like that too. I lost trust in all models, not just that one. But I had nothing else but myself to blame. Still, posting a vid online is just personal revenge, and talking about karma, will just make your own karma worse.
No. It does not "come with the territory". It's not like someone tells the girls before they start camming: "Oh hey, You'll most likely be posted on some other site dildoing yourself." They wouldn't start camming, if they knew. Videos of them only end up online because of inconsiderate, evil...