
It should be noted that “independent” isn’t a monolithic position, so it’s probably not possible to create a single party that satisfies them; you’ll have people that find the democrats far too conservative to associate with, people that find the republicans too far left, people that do like one party’s policies but object to the idea of formally identifying with a political party, and people that just ignore politics.
Setting that aside though, while there are technically enough independents to win, it’s a classic collective action problem: if large but not big enough number of independents break off of whichever party they tend to vote for in absence of something more preferable to them, then they end up with the less preferred party to them, which means that creating a third party is worse unless you can get massive buy-in within a single election cycle. This isnt impossible in theory, as you’ve pointed out, but in practice these kind of problems rarely ever are solved this way, because people just don’t tend to all suddenly agree on one course of action like that, and the knowledge that a failed attempt is worse than no attempt is available to everyone.
It’s happened before in US politics a couple times even, but it hasn’t ever fixed the underlying design issue that leads to two parties, the new one just takes over as one of the major two when one of the older ones gets so unpopular as to collapse entirely, and the same forces that lead to the previous party drifting away from the wishes of the majority of the country work upon the new one.
















I feel like this might overestimate the decline if there is also a shift in what sci-fi titles tend to look like, which feels plausible to me given that titles follow trends. Anecdotes aren’t super informative granted, but anecdotally, virtually none of the more recent sci-fi media that ive seen contains those keywords in the title (and most of the exceptions are newer additions to older franchises), and most titles I can think of with them are quite old. This need not mean sci-fi has given up on starships or whatever, but it might imply that, while we are still a long way off from building one, the concept of such things is no longer new, and so merely implying that a work features them is no longer enough to make it stand out.