I'm not nervous at all (disclaimer: I support public ownership of infrastructure over private/commercial ownership, stakeholders > shareholders). Local governments are governed by
local citizens. I have no impact on Comcast or Time Warner's governance, as either a shareholder or customer. If I don't hold my local government accountable,
that's my fault.
My local community owning my roads, sidewalks, water, sewer (storm AND human waste), fire hydrant infrastructure, as well as fire and police services has worked out a-ok. And while I take issue with Florida politics, EVERYTHING is open records. If my local police are corrupt and obtaining data illegally from my muni ISP, I can involve my state's attorney or other legal oversight bodies.
So! The overreaching issue isn't "this is about local internet infra", it's about local governance and self-reliance, which I find it difficult to argue against. Concentrated power corrupts, distributed power empowers.
Obligatory Muni/Startup ISP links: https://muninetworks.org/communitymap | https://startyourownisp.com/