Next to the chips and candy are the protein bars, trail mix, nuts, and fresh fruit.
Over in the cafeteria, next to the free pizza is the free salad bar.
With any luck you've got a range of employees. Some are concerned about their weight; some are concerned about getting enough vitamins; some really really want a boost of sugar and caffeine. It's possible to cater to all of them.
First, almost all corporations in America have break rooms and do not usually give away anything except possibly tea and coffee. Removing the free tea and coffee does not remove the break room. Break rooms have multiple uses.
Second, there are some laws and some basic industry standard practices that apply to the sanitary conditions of washrooms. Removal of creature comforts or breakrooms do not change them.
Third, Cigarettes are also a creature comfort. Why not give away cigarettes? Because they're bad for you, and expensive. Sodas are also bad for you, and expensive. And might I add, neither are necessary for you to do your job. Removing them would not have an effect on removing the break room or equipment, the sanitary conditions of washrooms, or anything else, because quite frankly they are not only unnecessary but they are (over time) harmful to the employee's health and contribute to diseases that will only prevent the employee from doing their job and increasing medical coverage costs.
So I doubt companies give away free soda and chips to prevent the slippery slope of unsanitary bathrooms.
In my experience (Boston area), people will happily eat Middle Eastern, Chinese, good Italian, northern and southern Indian... and, in general, will be happier with something different from the last time.