The Republican party typically has been the party which favors the interests of businesses; governmental regulation of various industries (expensive and needless interference from their perspective) is anathema to them. Well, a law forbidding any of the various things protested under the banner of Net Neutrality does amount of the terrible bugaboo of Regulation. Therefore, It Must Be Stopped.
This is a bit of an oversimplification and the principles behind it are a bit more nuanced than presented here (regulatory capture is a thing and it can suck), but it's a good first approximation.
This is a bit of an oversimplification and the principles behind it are a bit more nuanced than presented here (regulatory capture is a thing and it can suck), but it's a good first approximation.