I think it's inevitable that that's SpaceX's fate in the fullness of time.
But it seems like it'll be a while for them. They aren't indulging in typical market-leader behavior. They have kept their prices low - the market leader there by a substantial margin (based on $/kg to LEO). And they clearly have no problem making their best product obsolete via internal innovation. From what I recall, those are the 2 big pitfalls that entrenched market leaders tend to indulge in.
I'm skeptical.
Like Amazon, SpaceX is a fountain of ex-employees who have tired of the required workload. I don't see a few extra on top of the current constant exodus changing much.
The primary issue for other companies is culture and institutional ability to foster innovation and take risk.
The old space organizations like ULA or Boeing et al and government funded are extremely risk averse and are also optimized for other priorities like having presence in as many states as possible or using old designs/ components to keep jobs funded and so on which limits them.
The new space companies do not have the resources to be as aggressive or fast although they are trying, they do not have free cash flow of SpaceX or extremely wealth and committed sponsor. Blue Origin+Amazon(Kuiper is theirs not BO) have resources but are not fast or aggressive and most likely chance to compete if they can get their culture sorted.
Private rocket companies were not successful businesses before SpaceX for a reason, its success has inspired capital inflows but problems are the same.
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Astra, Rocket Labs, Relativity and Firefly are the only ones with some track record of orbital launching vehicles, Astra went private at 99% down round for just 11M in March-24 and are probably going to be either acquired or shutdown.
Firefly has no immediate reuse plans. Terran R and Neutron are the realistic contenders for reusable vehicles if successful(big IF) then will have Falcon 9 equivalent competitor commercially available by end of the decade (13 years after Falcon 9 landed regularly in 2017). Starship will be active well before 2030 and be a generation ahead again. SpaceX when Starship launches commercially say in 2025 are at least 20 years ahead of everyone else and currently 10 years ahead with Falcon 9.
The last time space industry had this kind of disparity were the few years after Sputnik and other soviet first launches, to catch up the federal government spent multiple % of GDP and made it the national priority and employed 400,000 people to do it. SpaceX is not Soviet Russia it is a domestic company NASA and Space Force benefits from and Trump/Biden are not Kennedy so that is not going to repeat.
Realistically next 40-50 years will be dominated by SpaceX in both satellites and rocket vehicles, even if they stop innovating soon.
I have no claim to knowing what SpaceX's secret sauce is, because the problem I think you run into immediately is that any sort of logical explanation then bumps into issues like the ones I'm mentioning here.
Mike Griffin https://en.wikipedia.org/wiki/Michael_D._Griffin
Legend had it Musk hired Mueller after meeting him and seeing a liquid biprop engine he was building in his garage. That sounds exactly like the type of person you describe. “I can’t do the cool shit I want to do at work because of forms/approvals so I’ll just do it myself at home”.
He set an implausible but interesting ’mission’ from early on. He set the culture of the company from the start such that the concept (borrowed from the tech world) of failing and iterating fast actually happened (rather than just being talked about in corporate presentations). He brought naive but effective ‘first principles’ thinking to many of the questions or problems which probably helped avoid the conservatism of ‘old space’. He brought enough money to start, but it was little enough that they had to be scrappy and lean for survival, which probably fed into the culture and built a great team further. And (by luck or judgment) he hired the right people, like Tom Mueller, who was already a rocket engineer, but was frustrated by his previous industry experience.
(And of course, back then he didn’t have the baggage he has now, which made these things easier to achieve.)
The reason NASA was doing that was because of risk aversion and lack of innovation!
The shuttle was shut down because NASA couldn’t afford another disaster like Columbia and there had been absolutely no meaningful progress to replace it .
Without spacex, that would still be the case , Dreamliner is still not done a demo flight and Boeing would have held NASA by the balls and renegotiated from fixed price to cost plus contract as they have been doing for decades.
SpaceX forced the hand by delivering on commercial crew (CCS)
The shuttle had bunch of older parts designed for other programs and was 30 years old in 2010.
SLS flies on engines that are decades old from shuttle era with no plan for new engines and still costs in multiple billions per launch !
If not for spaceX we would be cheering BO for successfully delivering the Vulcan engines and being proud of that as pinnacle of private space .
BO official Moro is step by step ferociously. They were always culturally tuned to be risk averse and careful