Actually, what would most likely happen in your case is that your employer would switch to the government option, keep you paying the same amount and they would pay the a substantially smaller amount and pocket the difference.
All I can say is that I congratulate you on your optimistic view of small company ownership. I believe mine is the more realistic assessment of what most company owners will do, but I certainly hope you're right and I'm wrong in that regard.
Fortunately it doesn't have anything to do with optimism... it has to do with motivations.
By your logic, you shouldn't have health care to begin with. After all, why in the world did they ever start offering you health care? The best way to have avoided providing you with health care was to not offer it to begin with.
If you believe that they are looking for an excuse to stop providing you with health care... then you seem to be forgetting that they don't need one.
The reason they offered you health care to begin with hasn't changed, and if they can do it while paying less then you have a better chance of keeping it. On the other hand, their out of pocket expense for your health care have been rising at many times the rate of inflation over the last ten years... so if nothing happens, they're most likely going to drop your health care anyways.
If you think they'll continue providing health care for you as the cost continue to increase, odds are you are the optimistic one here.
Weigh all the factors involved and see what you come up with if you don't believe me. But don't kid yourself on something this important.