Maybe... or maybe we just aren't certain about its efficacy yet. Medical researchers are a cautious bunch--"do no harm" and all. It's approved for off-label use for patients who want it now, and I agree with you that we want to avoid hoarding supplies of it to prioritize getting it to those in need. Fortunately, we are doing high quality trials (e.g. in NY--https://www.foxnews.com/science/new-york-state-will-start-coronavirus-drug-trials) that will hopefully help us answer this question definitively soon.