Few comments have made me want to downvote as much as this one. I still have another hundred or so points to go until I am allowed so I'll have to settle for explaining to you how much I disagree.
Your argument is a logical fallacy that I see a lot, but doesn't have a fancy Latin name. It is a combination of appeal to authority and circular reasoning so I'll give it a name right now: the Authority Circle. It has the form of:
"I believe X person/company/country is doing something dumb/bad/foolish."
"If it wasn't a good idea, they wouldn't be doing it."
This assumes that person X is smarter than you, therefore the fact that they are choosing to take an action is evidence that it is good. This is a lazy and unconstructive argument and you should be ashamed of yourself. (Unless you are a Wall Street shill doing PR spin. In that case, well done.)
So logically your argument is not well formed; what about factually? The behavior we see in investors is incredibly focused on short term gains and why not? There is no benefit to long term success to a public investor. Once the company (a small percentage of) their money is invested in flames out, they can simply invest in another company and drain them dry until it is time to bleed another one. (Hopefully unloading their stock to chumps along the way at the right time, before anyone realizes they are being sold a sick cow.) We know from history that unless government regulates the stock market, it is a short matter of time until the house of cards collapses. Today, the most long-lived publicly-held corporations are the ones where the CEO has the power to say "no" to intense investor demand for short-term gain. (We are waiting to see how long Apple can survive this now that Jobs is gone.) Everything we know tells us "yes, investors are indeed that stupid."
You have offered no new or useful facts or reasoning to this discussion. I give your comment a 0/10 for your unhelpful waste of everyone's time.