Comcast has limits too and it costs them real money to raise those limits. Pulling new fiber is not free, even adding a wavelength to existing fiber has costs. Their incremental cost  to add capacity may be less than the incremental cost for a cellular company to purchase more spectrum (likely from a competitor) or blanket a city with microcells, but that doesn&#x27;t mean it&#x27;s free. In Rural areas it may even be cheaper for T-Mobile to increase capacity than for Comcast to do the same.<p>Comcast could probably save millions of dollars each year in reduced capital costs if they could trim their Netflix bandwidth by compressing their video.