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.
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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?
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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?
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Submit your own "Starship wannabe" designs using as much current OTS components of your own region here for discussion!
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"wants to replace the Soyuz"

More seriously, I think that the Russians, if they have the funds, can make a Starship very quickly.
After all, they have already launched a rocket quite comparable. They have already developed reusable, high-thrust engines comparable to Raptors. -
But I don't think the agencies will start any project of this kind until they know whether or not the Starship will work. It's far too big an investment for a launcher that might not be useful, and it could have catastrophic consequences. Energiya/Buran has demonstrated this.
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