They will fund it, the new ACT systen that is in the desiign and implementation currently is totally reliant on it.
They will absolutely fund it. The entire military relies on this technology and we could not use unmanned vehicles or cruise missiles without it(or bomb a Chinese Embassy).
With GPS they can more easily track their assets and coordinate movement, strategy and tactics.
Cities and states also rely on GPS for Coordination as do major corporations. There is a health and safety issue as well as an economic benefit to GPS.
No way is this going unfunded