We have no right to force investors to buy new coins or old coins. It depends on them, they have own strategy, priority, or schedule for their investments. If they don't trust anymore on new fresh coins, it makes sense for me. We can count our selves how many new projects only produced shit-coins. Even if they don't become scam or failed projects, their coins/tokens have too bad prices on exchanges. For now, I guess most investors focus on Bitcoin or some other top coins only.