I should add that I am one of the people that completely exited SL after these ToS changes, but that shouldn't surprise anyone (probably more of a surprise that I had any presence there still). And I think that sentiment of being angry and digusted at the careless changes will be found in many SL users. I would certainly advise content creators to remove their IP from SL, but I recognize that is just me being careful.
However, I just think that as a percentage, the number of users it is tiny, even insignificant. LL knows this. When we see growth elsewhere, it probably won't be directly related to the ToS changes.