Well Louie, I'm 5'6" 133# 29 inch waist 30 inch inseam length, and have not varied more than a half dozen pounds all my adult life. And a skier about three decades. It is difficult finding pants, both on and off the hill. Actually up until the late 70s there were more smaller sizes for men available but for some reason a couple things happened in clothing about then. First the smallest men's pants sizes generally became 30 inch waist and inseams. And minimum lengths for ski pants were generally about 32 inches. Why did this happen?
Another thing that happened is that no longer were their different sizes for each model of clothing in shops. Only the large sizes had the full size ranges for displayed clothing models, with less for medium sizes, and even less for small sizes. The way it worked is the large sizes had the best looking stuff while the small sizes the most ordinary and least interesting. So I figured this was just more cultural bias toward tall people. I'd bet those who get jobs in clothing shops tend to be those who are most interested in appearance, clothing, power, and looks, are likely tall themselves. Of course such tall people and their worshipers are often those most discriminatory towards the rest of us.