A proposal I saw, years ago..a LOONG railgun setup on/near the equator. (And the proposed railgun was 1000 meters or a mile long..can't remember.) Launching from the equator gives additional speed/velocity, rotation of the earth assists (Provided the guns pointed the right way, lol.)
I like how private corporations are putting their toes in the water. If it becomes cheap enough that a company or group of companies can have a fleet without governments and their hot and cold budgetary cycles. There would be the revolutionary change.