- The price crashed because people got scared and the fast growth was unsustainable.
- The crash was inevitable, but MtGox's high lag exacerbated the problem by making increasing the fear.
When did the price drop exactly started ? Was it caused by mtgox servers being unresponsive, or started before that event ? Just wondering what triggered the drop.
My opinion is that Bitcoin in the longterm will be stable as being the first competitor to the banking system. But being traded for bank money, the banks would certainly start some moves to destabilize it or even buy it out. That is the biggest issue I have btw with Bitcoin... banks could buy it out.
I'm not too sure of the specifics, I wasn't really following it when it started to happen. The MtGox servers typically have a couple of seconds of lag in normal operation, but I think them becoming unresponsive would have happened shortly after the trigger.
You are right that the banks certainly have the capability and resources to buy out bitcoins, but I think that they won't be too interested in doing so. Yesterday's spectacle combined with the massive preceding growth proves its high volatility, and so I don't think banks would see it as competitive, rather they will probably consider it an experiment.
If you are deciding whether or not to invest in bitcoins, what yesterday should tell you is that you should only invest what you can afford to lose. If you make a massive profit by cashing out at peak price, then congratulations. If on the other hand you lose the money due to a further crash or the banks getting involved, then it doesn't matter because you would have invested some spare money.
There's still a lot of potential yet for bitcoins, and the risk of banks buying it out is a future problem (years away, if it ever even does happen). I think they would find it difficult however, as under normal circumstances most people don't want to sell bitcoins and instead try to hoard it, so the banks would find it hard to buy up enough BTC to destabilise it.