Even then. If you're building a million satellites, they only need to be about 42 meters long for you to make them into a contiguous ring in LEO. Smaller (22.5m) or fewer (537,000) for the same in a 200 km orbit around Mars.

Do that, and you can quickly bootstrap an orbital ring and make rockets obsolete from surface to orbit of either body.

In the case of Mars, the planet-wide dust storms make it a good idea to locate your PV off-planet, and an orbital ring is also very convenient for that.