You might have a problem with this approach - the waste is large, the environmental impacts terrible. But they got to where they are exactly by this process. See articles such as SpaceX Launched Over 80% of All Orbital Payload Mass in Q1 2023 (https://www.nextbigfuture.com/2023/05/spacex-launched-over-8...)
Europe could stand to learn a thing or two. We still do our launches in secret, often not telling a public that there will be a launch until the satellites are already in space.