The other arguments in the replies here covered a lot of it, but one other that I didn’t see is that it is unfair to the broadband companies who built out networks.

The argument goes, the broadband company spent a lot of capital to build out a network, but they can’t compete with a government run system that doesn’t have to make a profit.

It is an interesting argument, but I don’t find it compelling. I think internet access is a public good.