There are two problems with buying it without need. There is a shortage, so people in risk groups (elderly people and people with respiratory problems) or peop

There are two problems with buying it without need. There is a shortage, so people in risk groups (elderly people and people with respiratory problems) or people close to those at risk cannot get them. Second, it increases the price, which caused incidents of people stealing them from hospitals to sell them. So, in a way, it is more practical then you think. Not to mention that if it really gets dire, like in Wuhan, then the image becomes less hilarious. (That's why there is the study)