Consider the comparative overhead of dealing with this as a percentage of income (or percentage of attention demanded of management, or any number of things) and you'll see what I mean.
The issue isn't whether large businesses spend a "fortune" on health care, the point is that their political incentives are entirely different than those of small businesses because the effect providing health care to employees has on their business is so entirely different.
Hey Justin. All you're doing is pointing out that it scales better as they get larger. Imagine how much time and effort a company with 100,000 employees spends on optimizing and managing health care. Now compare that against their non American competitor who doesn't have any of this time/cost/concern/overhead. That's why I think irrespective of size businesses would want this off their plate.
The issue isn't whether large businesses spend a "fortune" on health care, the point is that their political incentives are entirely different than those of small businesses because the effect providing health care to employees has on their business is so entirely different.