Just got back, and missed this post. But sorry, my original explanation was unclear. My point was that it's not a binary obtain 2k/yr if you make 10k, but it's more of a curve of obtaining applicability at 10k, but then gradually obtaining less and less as you make more. So if you made 15k, you may only get a 1.5k credit, 20k would get you a 1k credit, etc. Rather than just If you make 10-25k, you get a 2k credit.
Arguably, if you were working 40 hours a week at a single location at a company of over 50 people, that would make you eligible for health insurance provided through the company you work for, which would then have two payers towards premiums. The offering company would receive incentives, either in the form of credits or deductions for offering insurance insurance... but I don't know enough about how the final verbiage of those was written.