As we've seen with TP hoarders and the dude that bought up 18,000 bottles of hand sanitizer, there are always going to be some bad apples that try to profit off of the misery of others. But I believe pretty strongly in the fundamental goodness of humanity. For every bad apple I've seen ten folks looking for ways to help.
Indeed, I consider that excessive purchasing of toilet paper, hand sanitiser, or anything else during an emergency is anti social as others are thereby deprived. I avoid doing this.
I have a large supply of toilet paper, and of many other commodities, but these were obtained years ago and simply provided a little welcome extra trade. I very much doubt that my historic bulk purchase deprived anyone else.
I had only very limited supplies of hand sanitiser, but did have large stocks of the ingredients to make my own.