The coins that can emerge as independent trends are either highly controlled or particularly wealthy. It's impossible for highly controlled coins to exist among old coins, as several rounds of distribution have led to a lack of concentrated holdings. New investors are far less focused on established altcoins compared to the top ten altcoins, which is why the trend is to invest in new coins rather than old ones. Of course, during the most frenzied times of a bull market, these coins will still be pumped, as the chips collected at low prices by the market makers will always be sold at high prices.