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While the Bitcoin network isn't hacked yet, but a cracker can steal it by hacking an exchange, which has happened many times since MT.Gox incident. I don't really see any direct correlation between the highest market cap on the market with the price of BTC.
Define "many"? I don't think even 1% of people in this world (that is, around 60 million) use Bitcoin. Even the number of users of Bitcointalk is only around ~2 million. Bitcoin is not yet adopted by many. On the other hand, looks like blockchain will have a bright future because mass-adoption is currently on-going.