Respectfully I think your case (negotiating in 2017) is the unusual one. You should read this: http://stopthecap.com/2017/05/24/get-better-deal-charterspectrum-2017/Dunno bout your second comments, I think you're a very unusual case... I've had TWC, Cox, CableOne, and Comcast... they all negotiate.
Cablevision eventually adopted a “one promotion per customer” policy, refusing to extend new promotional offers to customers rolling off old ones as they expired. Company officials admitted the policy would cost it customers it deemed undesirable, but would assure investors that prices, and earnings would continue to rise well in excess of inflation. The policy of “rate discipline” was applauded on Wall Street where it was seen as serving the interests of shareholders. The increased churn (customers leaving) rate was forgiven as long as revenue continued to grow.
TL;DR- cable co's are wising up (cablevision ceo is now charter/twc/spectrum ceo)