^^^
Star Citizen exists because there is a massive untapped audience that demands for something like it to exist. That audience has hardly been catered to over the past two decades. Freelancer was the last big space sim and it was incomplete. Up until the first alphas of Star Citizen and Elite: Dangerous launched in 2014 and 2015, Freelancer servers had the largest multiplayer population of any space sim. It's very telling that the space sim community clung to a 2003 game for over a decade. There just wasn't simply anything else.
The Star Citizen kickstarter embodies hope for the space sim audience. None of the big studios bothers with the space sim genre and Microsoft left the space sim audience standing in the cold when they booted Chris off of his project. The space sim audience has always wondered for over a decade what they completed game would be like. Then this kickstarter comes along, at a time when there is literally no other hope to see anything like it. 7 years have passed since the initial kickstarter and there is still nothing like what the audience wants... except that kickstarter. It's no wonder then why Star Citizen remains so popular despite the many failings of the project.