Charter is full of crap.
An ISP accurately describing the speeds folks will get rather than the arse-pulled fiction the ISP marketing dreams up? Never. Fucking. Happens.
Satisfied customers? More like captive ones. Depending on the terrain you may not even be able to get a cell signal much less wired broadband, so it's not like those folks have a hell of a lot of choice. Switching to satelite may be difficult if not impossible if any number of factors is in play, the least of which is trees blocking LOS to the required bit of sky.
Difficulty in providing to rural areas that are problematic to deploy to is why the government has been giving you tax breaks, sweetheart deals, & subsidies for decades. We've already paid you ten times over the cost to run fiber optic to every home, tent, & Port-O-Potty in the nation, so STFU, stop whining, & get busy providing what you've already been paid for.
I swear to Cthulhu's nymphomaniac grandmother that companies that have sucked on the government teat for too long should be nationalized, the C-level execs forced into cages for "many enter, only one survives" death matches, & the lone survivor placed in public stocks to be regularly, ritually beaten with wiffle ball bats as A Warning To Others not to pull similar shite...
I guess I'll go find my dried frog pills now...