Retail investors rarely have the strength to see valuable coins; they tend to buy randomly based on feelings. Otherwise, they might as well buy low-market-cap altcoins, as they have little further to fall. Alternatively, they could buy mainstream altcoins like LTC or BCH, which have a much higher chance of making money than blind buying.

A Letter to Retail Investors from Binance:

Most altcoins on Binance will drop to a market capitalization of 10 to 20 million before they basically stop falling and rebound. So right now, there are some altcoins with circulating values in the tens of millions. Please do not buy them; the chances of recovering your investment are too low. If you buy coins with a market cap of 10 to 20 million, they won't drop much further, and apart from being delisted, in a few months, you should be able to recover your investment and make some money. Isn't that much better than buying altcoins with a market cap of tens of millions?