The graph labels 767M for "clinical research studies" and then says many studies haven't started or are in early stages, but... does that mean the money is alr

The graph labels 767M for "clinical research studies" and then says many studies haven't started or are in early stages, but... does that mean the money is already spent and those studies will require other money? or that the money is allocated to the only formally announced study but hasn't been spent yet? or that the money is allocated to 5 mostly-yet-unknown ones? The latter seems like the best case but one wonders why these 5 observational studies would need that much, and if there's any mechanism for pulling some of that funding back? EDIT: there's a bit "The agency said $811 million has been legally committed to various activities, and the rest is earmarked to support future research activities." so it seems like the last part, so: hideous mismanagement to promise to spend that money in fixed ways regardless of results...