You're being very vague with your responses and I'm not really sure why. If you're referring to early access, it isn't really the same though is it? You don't buy into an idea by backing words on a page and having a few screenshots, and then have as many delays to the development with barely a working product to play. I've backed Subnautica and Astroneer (£7.50 for Subnautica and £12.49 for Astroneer). Subnautica was released earlier this year, and Astroneer is looking at being a release sometime this year or early next year. Subnautica was amazingly playable in the early access state, and Astroneer is as well. Granted, it's not the same vision and scope as Star Citizen, but they're also far smaller development teams working on these games and for what they both do as games, I'd say that they're quite groundbreaking. With these two titles, I knew what I was buying into when I bought them because they were in a completely playable state with the groundwork laid out when I bought them on Steam. At the moment, nobody really knows what's going on with Star Citizen in terms of the development because the goalposts keep changing all the time. Has the much discussed object container streaming been put into the game yet? Wasn't that supposed to be in within this latest update but that's now changed again?
Going back to your post, what other games are you referring to that have worked this way? Have they suffered delays on the same scale as Star Citizen? I very much doubt it.