Unregulated capital flight is really not a feature of Bitcoin.
Bitcoin is money with the ledger built into it. It's not for hiding wealth, but for tracking it. This is a market correction that had to take place.
People get confused right now because the ledger is more or less blank. It won't be. (As a slightly dystopian side note, BTC with very little history may become very very valuable.)
In the future, it is going to be preferable to pay for anything large with cryptocurrency. It's overkill to buy a coffee with Bitcoin. But a house, a car, maybe even rent? What better way to prove you own or have paid for something? The currency knows when and how it was used.
We currently live in a world where banks try to foreclose on homes that aren't even mortgaged. Bitcoin and the like will end that. But even more importantly, Bitcoin is about wealth protection. The average Joe will have very little of the deflationary income. But large banking institutions will.