At the end of the day, materials science is still science. The institutional framework is optimized for a very specific process, so it's generally faster to let the process play out as usual rather than go and cut corners. Rest assured; there are a lot of scientists out there! We can afford to let a few of them chase clouds once in a while.

In any case... the creation process described in the original paper is relatively cheap and low-tech enough that labs will likely generate their own samples in less time than any procurement process would take.