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So I've been having this question for quite some time: "Can any other global rocket players make their own (mini) Starship?" So many people are thinking that Starship/SH will stomp every other commercial rockets out there & I don't see any discussions of how can others respond.
The thing is while the structures of Starship/SH is more shipyard building like than any other rocket out there, it uses some of the most state-of-the-art engines ever. Not every main space power out there has the ability to develop their Raptors after all (e.g. the Chinese).
But then, not everyone needs such a big vehicle like Starship right now. Replicating current rockets' capabilities w/ something like a "mini-Starship" & built in shipyards like factories might be enough to keep the balls running.
So for example, let's say I'm a Russian & wants to replace the Soyuz w/ a one-on-one replacement. Can we just take the 50+ years old Soyuz engines design (kerosene, fixed nozzles w/ verniers, started by burning wooden sticks, extremely flight proven) & slap them onto the booster?
There can be additional engines installed specifically used for landing for example. The orbital stage part can also use off-the-shelf engines (RD-0124 comes to mind). Given the Russians still have good leads in metallurgy/re-entry control, is this "Starship Soyuz" even possible?
Or take the Europeans & Japanese for example, which relied on LH2 & solids for decades. Can a "mini-SRB-SH" stage using SRB motors wrapped by recovery system powered by LH2 engines, + LH2 powered "mini-Starship" even feasible considering troubles w/ DC-X 20 years ago?
Submit your own "Starship wannabe" designs using as much current OTS components of your own region here for discussion! 
"shipyard building" or not -- you can't deny that SpaceX knows how to build stages with really good mass fraction. After all, that's how F9 S2 is competitive with these hydrolox upper stages even though it has a kerolox gas generator cycle engine.
Yeah that's another issue when talking about other LSPs "failing to respond to SpaceX" for building reusable rockets. ULA/European/Japanese might be able to reach such levels, but others have difficulties to even do that - e.g. the new Chinese rockets have poor mass fractions.
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