What's the issue with Network Neutrality here in the US?

Proponents of regulating the Internet under a network neutrality regime are regrouping for another major push for federal action, with all of the Democratic presidential contenders lining up on their side. They have the advantage of an excellent marketing message they want to save the Internet. But just under the surface of that feel-good slogan is an aggressively pro-regulatory agenda that could deter needed infrastructure investment and ultimately end in government management and ownership of the Internet. And that spells disaster not just for economic growth and innovation on the Internet, but also potentially for freedom of expression.
Information found at: http://techrepublican.com/blog/the-conservative-argument-against-net-neutrality

Basically, this short segment is saying that the Republican party wishes to allow freedom to use the Internet, but the Government would end up being in complete control of it. However, there is nothing that says the Republicans would charge the American people to use it.
This article is interesting because it demonstrates the Net Neutrality side of the argument from the Republican point of view, but doesn't explain to the full extent of the Republican's ideals of Net Neutrality.