Does it not worry the backers that they have bought stuff not really knowing how all these ships and such will be balanced in the end? That is something I never understand with preorders saying you'll get a gun or an item, by and large those items end up being useless or starter items. To be paying such an additional amount of money for a ship that someone else might be able to surpass in 10 hours of gameplay could be the reality.
Because its a digital good you don't even own it, but it certainly cost you a physical amount of money. I understand the desire to fund a game you want to see, I don't see the desire to back it more for a ship which you have no idea whether it will offer any benefits at all.
I could see that being an issue for someone who is "buying a ship" and not pledging support. If you catch my drift.
edit: but along with the ship you get access to the alpha and beta.