

That's just Netflix. Not general web use, xbox/ps4 and so on. ATT has caps of 150-250 depending on DSL or Uverse. Comcast has cap of 300 that they enforce in some places, but want nationally. 4K tv's are getting cheaper every day, Vizio just said their 4Ks will start at just $999
4K video of Netflix at 90min/day (10GB) = 300GB.
Obviously, there will be significant charges for overages.
http://www.dslreports.com/shownews/Average-Netflix-User-Eats-45-GB-Per-Month-130613?utm_source=dlvr.it&utm_medium=twitter
New analysis from the Diffusion Group (spotted via GigaOM) indicates that Netflix users now watch, on average, 90 minutes of programming via the over the top streaming company every day. This usage equates to around 45 GB per month in data consumption, or about a third of what's a fairly standard 150 GB usage cap on a lot of DSL users. As Netflix expands its selection of 4K content -- which the company states can consume up to 7 GB per hour -- you can expect those numbers to scale upward quickly. Will usage caps keep pace
And before someone comes in here talking congestion is the problem, remember this: ISPs tell government that congestion is “not a problem,” impose data caps anyway