Besides greed, I can also list two major facts which will ruin this concept, and these two facts are also people who thought the reason why bitcoin is a revolution.
1, The use of bitcoin. People who valued bitcoin ( I mean people who truly valued not just people who treat it like a prostitute_greed). These people they thought bitcoin is a revolution nothing less like it will change our life, protect our privacy, our democracy, blablabla ...Ok, let's assume all these are true. All these are true only if this concept is major for USE, am I right? Now tell me, when bitcoin at the price of $1000 (and of course in some people they trust it will go $10000), why most people buy it? Just spend $1000 and for what? go to supermarket and buy some wine so FBI can not tracing you?
Someone maybe jump out and say why not talk about gold? Yeah, good point, but do you know how long the history of the USE of gold and silver? And even after we invent the paper currencies, the gold still the big buddy behind them because its long history of using made it reputation and value. What the guaranty of these coins?
As I said people who value this concept they don't have many coins (which made it lack of USE), and people who have many coins they don't value this concept but only profit which made it lack of guaranty)
2. Freedom. Yeah, I thought if I say this, many people will jump out and beat me to death. Because, apparently, they will think that I am a unti-freedom-man. But I will still say this just because I care about your wallet (Yeah, maybe I am so fcking boring). Most people will very dislike and reject a word "controlled", of course me too. But most of them also forgot the dark face of freedom. Yeah, even gold shining word "freedom" has dark face. Without control, bitcoin might give people the freedom of currency and home finance. But also without control, when many people spend their saving( after "other many people" shouted about the new concept with so many benefits) to buy many coins, and wake up the second day and suddenly find your saving lost 50% (Yeah, as I said, if "other many people" they valued this new concept, this will not happen. But sadly, most "other many people" they buy coins not for this purpose.), what they will do? I don;t know, but one thing I can sure you, they will never shout out "Freedom" in their garden (assume they still have garden) like William Wallace.
After all, I just want to say. Yes, Yes, Yes...... You guys said many things right, it is just you thought this is "The coin", but truth is it is just "a coin".