I think that we’re just starting to get the bioinformatics tools (and the general bio tools, like reasonably-priced, reasonably-fast sequencing, and mass-spectrographic proteomics) that will enable biome analyses.
It’s kind of where we were on genomes 10+ years ago, maybe even 20 years ago when the first ABI Prism was the rockin’ thing, if your lab could afford one (half a mill?), and the alternative was the Sanger slog....