Investors who jumped on the Trump Media & Technology Group Corp. stock this week despite warnings that the company may never be profitable were put on notice Thursday morning by Wall Street Journal columnist Daniel Henniger that the fortunes of the company are subject to not only the whims of the Donald Trump, but what the future has in store for him. After taking a big stumble at the start of the week, the stock has since stabilized, but the long-term prospects areanything but certain. Put simply, Henniger explained, the whole production could fall apart if the embattled former president flop…