Every coin(including Bitcoin) was starting at the price of few cents. I know some investors are focusing only on coins under 1 dollar.
They are mainly focusing on that population to which this under one dollar coin is most stable. Mostly people cant just afford the price at which bitcoin is moving now. Although this is one of the low prices of bitcoin but still people failed to get a whole bitcoin. So they mostly trend themselves towards those who are easy to buy to them. Like you are telling some coins.