It makes sense when you think about its evolution. GPS capability delivers incredible military advantage. (See: Gulf War) Consequently, US government funds co

It makes sense when you think about its evolution. GPS capability delivers incredible military advantage. (See: Gulf War) Consequently, US government funds constellation. Because money is no object vs the military advantage. Because of the nature of GPS, receivers (devices) can more or less be iterated independently of transmitters (satellites). US government allows civilian use (with reduced accuracy) for economic and geopolitical reasons. Commercial market rapidly iterates on the device technology (smaller, faster, cheaper). Transmitters are upgraded and enhanced, as expanding commercial market now justifies expense. Eventually accuracy limitations dropped. We end up at today.