Windstream is scum
Agree with almost all you said, but you're wrong about one thing. This company has a solid business model. Don't be naive. Here is what they are doing.
They are throttling back speeds (especially weeknights after 7pm & weekends) because in doing so they use less bandwidth and data. They purchase their bandwidth from nearby data centers, so every month they have to make payments for what is used. Less data used = lower payments for them, meanwhile they are charging customers the same price no matter what. This = a vast increase in profits for them. Its robbery, make no mistake about it.
Windstream is smart like a fox in that they usually service areas where they have little to no competition from other service providers. So they really don't care if they piss off their customers. They aren't worried about losing customers. Not enough to make a difference in their bottom line anyway. Their thought process is "where they gonna go?"
That my friend IS their business model. They are scum, but they are no different from any other rural service provider who does the same thing. The instant they get competition Windstream will sell the entire company to a larger provider like AT&T and laugh all the way to the bank. Hell, they're laughing all the way to the bank right now.