A few random observations on your essay...

One of the major benefits of decentralization as I see it is to reduce the threat of tyranny. You touch on it, but I see it as central. Our founding fathers, to a man, were strict decentralists. We need to centralize only the common defense, the postal system, and a common system of trade.

Now, v.v. BTC, the coin is clearly still the best known and still (despite all competition) the one that-- I would hazard to guess-- a majority of westerners, and a strong minority of the rest, has heard of and would use if they had more options for its use. People, generally, will always err on the side of freedom, and anonymity if they fear any type of tyranny, and all the world's governments (with the possible exception of the Kingdom of Tonga, and a couple of others) currently show a strong inclination and trend towards greater and greater tyranny. Additionally, of course, you have the globalists and the U.N. which sincerely desire the absolute tyranny of an omniscient, omnipresent and omnipotent world government.

If that emergent world government succeeds, they will certainly adopt and ENFORCE a world currency, and I see blockchain technology as a very likely tool they may seize on to bring it all to fruition. Whether or not BTC becomes the world currency, it is certainly the most likely of all the cryptos to currently be looked at for such a role.

Steem is a better, more truly grounded and inherently valuable crypto (if Steemit manages to incentivize readership as much as they have content contribution and figures out new and better ways to monetize) and we should hope to either absorb BTC one day or vice versa...hopefully before the declaration of any global currency.

Even though decentralists are right AND ARE THE UNDISPUTED GOOD GUYS, I fear they do not have either the political or military power to prevail against the globalists.