This is a business for these folks. It's a multitiered organization, with the coyote at the bottom. It's a good bet that the group of immigrants found dead and dying in the desert last week had jobs waiting for them in this country. Someone wanted them to build houses, or do landscaping, or cook food or clean motel rooms. That person, that company, is just as responsible for the men's deaths.
Smugglers make for convenient scapegoats.
But only because they've found work in the one thriving industry Mexico has to offer. Suddenly the smuggler isn't a very good bad guy anymore. Because the real villains aren't all in the desert.