Aww come on; you just don't have enough vision. There shouldn't have been any money in formic acid, since anyone can just get some formic acid from a non-beekeeping supplier and use it, right? But, presto - Mite Away formic acid treatment. There shouldn't be any money in sugar; it's a very common grocery store item. But, beekeeping suppliers offer it!
When oxalic acid is approved, something similar to Mite Away will come about. It might just be evap pads, specially designed to fit in Langstroth hives. Or it might be the acid in combination with some other treatment - introducing MelliFree strips, the all-in-one total mite solution, featuring oxalic acid and menthol for control of Varroa and tracheal mites in one convenient treatment! A little imagination goes a long way.