How? They invested that money based on the profits they make under the current neutral model.
"How? They invested that money based on the profits they make under the current neutral model."
Because they envision increasing profits through business models that "Net Neutrality" would make illegal. They also envision expansions in bandwidth and access that will cost money. Under your preferred business model, those increased costs would be passed on to end users like the poor student that some Net Neutrality proponents mistakenly claim to be protecting. What cable companies have actually been proposing is passing those costs on to high bandwidth consumers like Google, who profit heavily from those upgrades.