Not all the investors have invested money to buy bitcoin through exchanges but they have spend money to buy bitcoin account and i know some people who bought bitcoin account for as low as $10 and earned a fortune out of it without buying bitcoin through exchange rather earning by joining bounty campaigns and signature campaigns as well as offering any service through this forum like designing logo and also web designing, online marketing as well as coding and all there are many ways to earn bitcoin without investment so i think there are some smart people who can hit fortune without investment.