How exactly could you divide a GNSS satellite in that way? Surely you need to transmit the time signal at a particular power level that would required a certain

How exactly could you divide a GNSS satellite in that way? Surely you need to transmit the time signal at a particular power level that would required a certain class of antenna and power system. Each of those satellites would need separate control systems so instead of having one fuel tank and thruster you would need several fuel tanks and thrusters. Frankly the new entrants into the remote sensing market (like Skybox) have yet to make much impact in changing the market. Having a more innovative platform makes little difference to the end user without significant scale (which is currently lacking).