On the other hand, while shockingly low caps are generally accepted on mobile, people do protest whenever a provider tries to place caps on landline (VDSL, DOCSIS) contracts.
I'm in the UK, and pay £33/m ($50) for unlimited 4G data, calls and texts, of which 12GB can be used for tethering. It includes roaming to 14 other countries at no extra cost. This is on a 1 month, SIM-only contract on Three. I think this is good value.
T-mobile, to be sure, I didn't look at. But with that plan, "if you are in the top 3% of users" (which 60GB/month is likely to be, especially as that's just one of those four users), your data use will be slowed to 2G speeds.
"typical download speeds of 40Kbps-200Kbps and upload speeds of 20-80 Kbps"
Snapchat is going to get pretty painful pretty quickly.
But nobody uses 60GB of data on data only. When you're at home you're typically connected to Wifi. Also in many ways that's besides the point. Usage on mobile devices is skyrocketing and in particular young users are the reason for it. At this point high data usage per month is not exactly an exception but the norm.
Um, if you're in the U.S. probably not. Most have some kind of limits even on 'unlimited' such as your connection goes to ISDN speed.
Even my cable modem has a 350GB a month cap which I occasionally exceed.