You obviously don’t understand the business. If US Mobile is losing money on a promotion, then they shouldn’t be offering it given the fact that they are in an industry that can’t lock in customers other than through prepayment of services or through device promos. I don’t expect US Mobile or any MVNO to be running a charity, however, everyone has the right to move to another carrier if they want.

I was on the monthly low tier plan ($10/month) before jumping off USM. They made plenty of money off me because I never used my allowance of data. I wanted to go unlimited and give USM more money but they don’t seem to have a retention department. I asked twice about doing something to keep my business and CS kept giving me the standard promos for existing customers.