The federal government wants to create Wi-Fi networks across America, so powerful and broad in reach that consumers could use them to make calls or surf the Internet without paying a cellphone bill every month.

The proposal from the U.S. Federal Communications Commission has rattled the $178 billion wireless industry, which has launched a fierce lobbying effort to persuade policymakers to reconsider the idea, analysts say.

That has been countered by an equally intense campaign from Google, Microsoft and other tech giants that say a free-for-all Wi-Fi service would spark an explosion of innovations and devices that would benefit most Americans, especially the poor.