One answer may be to get another smartphone, from a carrier who doesn’t cripple tethering. But that is a half measure, meaning that you have (and pay for) lots of duplicate functions. The better answer could be a plain vanilla mobile phone and a connected tablet — AT&T’s business decision to charge a la carte for data plans makes a decision to get what amounts to a Jitterbug much easier.
Sufficiently scaled, the mobile phone industry could devolve in an entirely unexpected way, back to the Stone Age. Calling and data plans are already commodities. Why not handsets?