We can't do brilliant pebbles until we get a lot better rockets.
The cost/pound is way high. If you have 24 hour orbit over hot spots, you are way high. If you are in low earth orbit, you need a bunch of sensors and shooters.
The best we ever did was the Saturn V, and that was the equivalent of an aircraft carrier for each one time launch.
We had a lot better rockets planned and ready to go. Dust this off and let er rip.
SEA DRAGON
Manufacturer: Truax. LEO Payload: 450,000 kg (990,000 lb). to: 185 km Orbit. at: 90.00 degrees. Liftoff Thrust: 350,000.000 kN (78,680,000 lbf). Total Mass: 18,000,000 kg (39,000,000 lb). Core Diameter: 23.00 m (75.00 ft). Total Length: 150.00 m (490.00 ft). Launch Price $: 300.000 million. in: 1962 price dollars.