Don't feel sorry for those people, exchanges exist for a reason. If people feel like they do not want to hold on their cryptocurrencies anymore, they can still sell them. Moreover, as long as there are enough people willing to buy those coins at a higher price, it can only keep rising.
I'm not a bitcoin booster or super believer or whatever the term is (even though I have some), but even if we are to follow your arguments, and assume that Chinese traders got the price that high, we can say that with a market cap as low as $10B, China hadn't likely injected as much money as Wall Street would if they entered the market. My point is that even if the price crashes because of some bad news in China, it still has a chance to rise again when Wall Street comes (if we are to believe that those companies still want to enter).
It really looks like speculation is what keeps the btc/usd pair rising, but with such good news coming, I can't think of a lot of reasons why people would stop speculating. Keep in mind that there is no short supply of people who want to get rich with little work.