Before throwing around accusations like this, you might want to consider the evidence. For instance, how often has an FDA-approved drug been pulled because it was dangerous in unknown ways vs drugs which haven't been through the FDA? Conversely, how many home cures have been shown to be useless or even actively harmful?

I find it interesting that you are citing the study on homeopathy in such a gerrymandered way; first, it's not $2.5 billion just on yoga and meditation by any reasonable interpretation. Second, the major conclusion of the study is that virtually no holistic/homeopathic remedies have any health value above the placebo effect. Thirdly yoga and meditation haven't been found to be beneficial, they rather have not had conclusive results either way.