If a small-ish group of people can buy the daily supply with a smallish amount of money, I would say that the system is in it's death throes.
According to your logic, Bitcoin was dead 2 years ago.
But let's examine something. If the price went back to $1, Bitcoin would be just like it was when it was previously $1, except for the following:
- many new exchanges
- many new merchant solutions
- many new vendors
- stronger hashrate
- stronger brand recognition
- longer lifetime (more reasonable to trust)
- stronger client software
- no displacement by multiple competing chains
- etc.
If Bitcoin was viable when it was previously $1 WITHOUT all those subsequent improvements, it'd be reasonable to think it's viable at $1 WITH all those improvements.
The enumeration of improvements is exactly why I consider the solution to be dying. It is a bad omen to me that even with all of those things you've outlined, the whole systems capital creation can still be purchased for a small outlay.
This surprises me. I would not have expected it to come to this, and am deep in the red on my current BTC bet due to where I started accumulating (durring the Mt Gox down-time.) But as always, I did not put enough money in that I could not afford to lose with a chuckle. Indeed, I outlined a certain amount that I expected to put in and still have a fair amount of power dry and am still buying on dips.
BTC may or may not pay off for me in the end (years from now.) In the mean time, if I want to support efforts which happen to be out of favor with governments/financial institutions, Bitcoin is useful. I can buy some Bitcoin for USD and get it to the target within minutes and thus not lose value in spite of the rather unhappy longer term trend of USD/BTC value. It is, of course, up to them to transfer it back to their chosen currency.