The point is clear. The OP is mistaken in saying that Chalav Yisroel is comparable to Chalav Stam. There are glaring differences in avaiability, whether your are looking for organic, competitive price, freshness that lasts longer than it takes to bring your purchase home, variety in choice of products (especially chocolate/chocolate mix), or even simply to be able to buy kosher products bearing an OU-D.
Plus, has anyone ever heard of a pig dairy farm? USDA is the best regulating authority in America. It is thousands of times more competent than the FDA. There is no doubt in anyone’s mind that the only milk harvested in dairy farms in America is cow milk. There’s not much you can trust in government these days, but milk is one of the things you can (I wonder why….). Chalav Yisroel is simply a chumra, like any other chumra. The actual milk you are drinking does not contain a higher percentage of cow milk than Chalav Stam. Guaranteed.