I don't understand this feeling of being entitled to increase your wealth by, say, 100 or 1000 times in few years, by doing nothing and just holding bitcoin.
Question: Do you think it's ethical to buy a lottery ticket and hope that it pays off? If it does, is it ethical to collect your winnings?
I know this is not exactly the same thing as Bitcoin, but I'd like to probe a little into the idea that it's wrong to increase ones wealth without being "productive".
Another: Is it ethical to accept a large inheritance? What about a small gift?
Lottery ticket: If your ethics are Judeo-Christian, then it's ethically wrong. On top of being monumentally stupid. Collecting the winnings (profits of gambling) would also be wrong.
Large inheritance: If by "accepting" you mean taking it and giving it away, then you're awesome from a Christian perspective ("If thou wilt be perfect, go and sell that thou hast, and give to the poor, and thou shalt have treasure in heaven: and come and follow me." -KJV)
Ethics are meh.