I'm sure it wasn't cheap per se, but they certainly saved money by using the same ride system as Kong, which had required some hefty bugs to be worked out before it functioned properly. I'm sure this perceived return on what was largely a preexisting investment was likely one of the main motivations for greenlighting the attraction, along with simply wanting the huge F&F brand in the parks. But it's a return on investment that didn't come to fruition. Not only are people not visiting the parks to ride Supercharged, it already has a decidedly negative reputation. It's hard to say what they'll do or how long it will take given the ride's youth and the amount of capital already being spent elsewhere, but they're certainly aware that the project is a failure.I don't think F&F is going anywhere anytime soon. I imagine they sunk a lot of money into it...somehow.
Considering they built a brand new building just for this attraction, which was probably the largest chunk of its cost, the real question here is how easily the current ride can be scrapped in favor of a new one, which could be a major factor in their decision. It's a large building, but I'm not aware of its particulars.