Exchanges, mainly Binance and Coinbase right now, have to offer SHIB/USD trading for there to be a market for this, and if there really was an unannounced selloff of this magnitude right now (with the relatively low transaction rate), the coin's value would instantly crash.

There's also the issue that, since nobody is going to use it to trade commodities or actual goods and services, the value of this coin is entirely based on speculation of its future value by investors.