Lawsuits for what? They never promised any customer that they would immediately deliver a working end product. As far as I can make out, they offer early access to an in-development product, with your purchase going toward funding development. It’s more akin to a donation with strings (access to the product).
Maybe because development has a high ongoing cost that they do not have any other product to take up? Star citizen has a fairly large scope, and the fact that they have even gotten to the point where a fairly high number of gameplay loops are fully integrated is quite impressive. If you look at their ship designs, for example, you can see just how much care was put into a lot of the designs (see the architectural reviews, for example)
There’s nothing technically stopping you from building an android smartphone just the way you like. In fact, there’s extreme modding folks that do things like already. What we really lack is a future-proofed connector standard for component connectivity that just works.