Newbie - Who would buy my coin if it raises it's price?

[jesusfrank]

  Hello i was wondering...

let's suppose i buy 15,000 coins in $1.00 each one, then it raises to $3.00 each one.... great now i have $45,000 dolllars.... BUT the problem is that i need exchange my "coin" to bitcoin, who would buy my coin if it is now expensive?.... is there a chance that nobody would buy it?