I am sure if you asked Charter customers how much they liked the Verizon Fiber service they cannot get, the number would be even lower than Charter's score. If you look at what incumbent ISPs, including Charter, did to try to keep Google Fiber, AT&T Fiber, Ting and others out of their markets, I don't know how you can call that anything but monopolistic. They try to limit choice so they can charge you whatever the heck they want to. Other monopolistic practices include providing ancient set top boxes with buggy software, like the SA8300HDC running Navigator they apparently were still handing out as of a year or so ago in some markets, crappy customer service, piling fees on top of fees. Charter certainly isn't the worst, especially as an ISP, but clearly they aren't keeping their customers particularly happy on average according to this measurement.
It was nice to see NY go after Charter for not meeting the terms of the merger approval. I wish they'd do the same to Verizon, Frontier, and the other companies that took state and federal money to expand their broadband coverage and then haven't. In Otsego county, Frontier service is apparently out more than it is on in many, many cases. My parents switched to Spectrum after months of outages due to "cut fiber lines." It was just ridiculous. They are certainly happy Charter offers service where they are (and I know my brother would love to have their service where he is) but that doesn't mean they are happy with how they are treated when they call for assistance or go to the retail location.
In my own neighborhood a friend switched back from AT&T Fiber to Charter to save money. He was happy enough until he started having trouble. It took three truck rolls over two weeks to determine the problem was the line feeding his house had degraded to the point that it needed replacing. They fixed it in the end, but it was a frustrating experience for him and his wife, who works from home, and the tech support was subpar based on what he told me. I have a friend in Miami who loves his Comcast X1, but he hates dealing with Comcast. It is a common complaint, and it is reflected in the ratings. I don't know why they cannot improve the customer service experience except that they probably don't want to spend the money to do so.
I can only speak for my area. Google Fiber is a joke and should be used by no one, AT&T doesn't service anywhere within many hundreds of miles from me and is beyond irrelevant and the only Ting I know of is the Sprint MVNO. We have two small fiber start ups in my general area of Upstate NY, Empire Access and Greenlight. Neither of which Charter tried to block. One of the areas Empire Access services is town a regional headend is located in, a community where cable has had a heavy presence in since the late 80s when it was Tri-County Cablevision.
For cable set top boxes, just about all Charter areas should have access to at least the 101/201 WorldBoxes. Most areas should have access to the 110/210 Worldbox 2.0s, except for L-BHN areas. In L-TWC and L-BHN areas you still have a shot at getting a 6 tuner DVR. For extra below the line fees, look no further then everyone's fiber hero, Verizon. The bills posted online from Verizon Fios triple play subscribers have more below the line fees then any other provider that I have ever seen. Charter has zero below the line fees on internet, zero below the line fees on phone and only the broadcast TV, mandated franchise fee and 6 cent FCC fee for video. People will complain about paying $7 - $10 per month in STB rental fees, but have no problem paying $30+ per month financing for the latest stupidphone from their cellular provider.
For customer service, my experience has been nothing short of outstanding. Including a service repair within hours of a driving ban being lifted after getting 5 - 6' of snow in a four day period.
The NY thing was a joke and a ploy during an election year, another corrupt move by the second most corrupt state in the US. Last year more people left NY state then any other state, we all know the state is corrupt, and the smart ones are leaving.
Having problems that negatively impact service is terrible and frustrating, no doubt about that. If your livelihood is dependent on having reliable internet access then you should have business class service. At work I have three coax accounts with Charter and one with Comcast. We've only had these accounts for about 4 years now when we opened up additional offices around the country. Each office has had internet problems requiring a tech be dispatched at least once and all were solved same day or next day at the latest. The only repeat offender was at our Dallas facility there was an ongoing problem that was happening for over 6 months before someone let me know. Called it in at 9AM, and a tech was there at 3PM. After hours of troubleshooting the problem was discovered, and line techs were dispatched the next day. Everything has been rock solid since. My livelihood is not totally dependent on having internet, but I need to be as connected as possible for work in case of being stuck at home due to weather or taking care of stuff off hours, so that's why I have HughesNet as well.
On a side note, two of the four locations at work were brand new builds and required build outs and plant extensions from Comcast and Time Warner. While they both went relatively smoothly, my dealings with Comcast Business were very enjoyable. I got frequent status updates from the account rep and I was able to work with them to expedite the build out when upper management at my job decided to move up the target date for the office grand opening by a month. 5 stars all the way around from me.