From my understanding what this new rule does is to no longer exclude cloud providers from this tax.
Be that as it may, this makes Chicago seem insanely tone deaf and outdated in their response to the changing times. My perception is, there's already a brain drain in Chicago in terms of young, technically minded talent. Crap like this certainly doesn't make Chicago seem more appealing tech savvy people who are considering a move.
One might argue that on paper the money involved for an individual won't be that much, which is sort of true but the bigger issue is perception. This makes Chicago seem like a greedy money grubbing place that's gonna nickel and dime you any change they can get.