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They did pioneer reusable orbital liquid fueled rockets, closest before that was the space shuttle's SRBs (solid fuel, dumped and fished out the ocean).
They are incredibly cheap to operate by rocket standards, the reason why they haven't lowered the pricetag is:
a. Would absolutely be an anti-trust against them if they didn't stay close to competitors (monopoly by simply being too good is a thing)
b. Capitalism baby, they have no real competitor so they can make a crazy profit (and because of point A they basically have to unless they want to be sued to oblivion).
Contracts* They have government contracts. Government requests a service, SpaceX provides the service, SpaceX gets paid, simple as that. They have gotten subsidies to expand Starlink, but every ISP gets that and even then they have been declined it countless times because AT&T, etc. have lobbied against them.
I'm sorry, what other rockets and space capsules can be reused? What other rocket can be returned directly on the launch pad?
Because they see milestones being completed in the testing program, it's about where it exploded (it was gonna explode either way, planned or unplanned).
NASA sent a 50m tall, 9m wide second stage that was designed to be fully reusable with full-flow staged engines and then transferred super-chilled fuel between tanks? Cool! Which system was that? Would love to read about it!