If you really believe that letting NYC tap additional tax revenue (from, in this case, non city residents) would lead to a corresponding decrease in other taxes, I'd suggest you're demonstrating a very rosy view of government finances.
obtelecom: There's an extra special "tax" on telephone services (wired and wireless) that's applied to the dozen or so counties (that's NYC and a hefty chunk of the surrounding area) supposedely earmarked for the mass transit system. Note that I just spent a half hour going through lots and lots of financial web pages and couldn't find the actual figure ...
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