They're like seventy something percent of the population. Factor in normal sized people who are "nice" about this kind of thing and lost sales are pretty minimal. In theory at least, it makes sense. But the reality is that even fat people don't like looking at fat people. They want to think they're going to look like normal sized models rather than seeing the reality of what they're going to look like.  A lot of smaller companies still haven't wised up to what larger ones who can afford to market test things are already well aware of.