What about people who are affluent because they save $190 a month by using a Tracfone instead of a iPhone? They might be able to fund an IRA or afford a down payment for a house, or pay off their student loans or something.
An AT&T 15gb plan with unlimited calls/texts is $115/month.
Next 12 (upgrade every 12 months) you pay like $40-45/month for an iPhone 6s. They recommend insurance which is another $8-11/month. Tethering adds $50-65/month.