Well, obviously TAG could still bring things into production - albiet at a slower rate and under their own steam.
There is also the option to re-boot the Kickstarter, perhaps with a lower goal. There is a recent fantasy KS that did just that and the second time round seem to have attracted much greater investment. And all they are showing is just renders AFAIK, whereas TAG is showing actual figures.
There are two types of funding - fixed, where the amount has to be generated or no funds are charged; and flexible, where the donor's card is charged and all moneys go to the drive regardless of whether the goal is reached.