I see that there are a lot of upsides to crytocurrency, both in reality and conceptually. On the other hand, bitcoin also seems to have a lot in common with penny stocks. If a currency is only worth the value that people ascribe to it, then of course there is incentive to 1) get in early while the price is low (10,000 bitcoins for a pizza) and 2) get others to follow you in and prop up the price ($6,000,000 pizza). The early miners created tons of coins with minimal energy; these coins don't cease to exist just because mining in the present is nigh-impossible for the Average Joe. People who already have bitcoins (especially people with lots of them) have a financial incentive to get others to adopt the currency; the more people who decide bitcoin has value, the more value the early adopters receive from their trivial investments.
Despite all that, there are upsides to cryptocurrency. I am not convinced that those upsides outweigh early adopters like Gavin Andresen and "Nakamoto" from quite literally becoming rich at the expense of others, as their coins had no value until others invested. That's not to say that fiat currency is any better, but why should I prop up one group of speculators (early bitcoin adopters) vs another (fiat bankers)? What incentive do I have to feed into this system? In theory, why shouldn't I just create my own crytocurrency (since it's open source), quickly mine 10-20% of all possible coins, and then open it up to the public and make billions of dollars? What is to keep the early adopters from dumping their shares, flooding the market, and laughing all the way to the fiat bank?