Net neutrality prevents internet service providers from charging more for certain kinds of content, or throttling or blocking other content. "If net neutrality disappears, it could have a significant negative effect on the local journalism market in the U.S.," Mathew Ingram writes for Columbia Journalism Review, reporting on Hersh's piece "Hersh says the market for local news is in an extremely fragile state, thanks in part to the decline of advertising, and the loss of net neutrality protections could hit local providers particularly hard."
Also, as The Rural Blog has reported, American Press Institute Executive Director Tom Rosenstiel believes an increased focus on national news in the era of Donald Trump has reduced the audience for local news.
Hersh says local journalism is often the first source of information in a crisis, and a particularly well-informed one, since local reporters know the local politics and culture. But independent local news outlets won't have the buying power of large media conglomerates, and won't be able to negotiate good deals for reader access with ISPs. That means fewer new readers, especially if outreach efforts involve bandwidth-heavy videos.
The rollback will likely pass on a straight party-line vote, but will also likely be challenged in court, and thus may be delayed. With Ingram's article is a great list of current stories on net neutrality that can help provide context for an issue that can be hard to understand.