Satoshi designed it that way BY ERROR (or by cheating and lying).  I simply don't think that bitcoin is going to fly so high.  It will find its niche, namely an unregulated reserve currency for big sleazy business, and as a highly speculative toy for gamblers/traders, and that's it.  Bitcoin, nor any other block chain type crypto, will be "the future of money" for most people, simply because it is too clunky, authorities won't let it happen, and in the end, people are material beings.

So, yes, I agree with you that the design of bitcoin is such that it will remain immutable, and that most of the current characteristics of bitcoin are understandable by game-theoretical arguments.

Where I don't agree with you is to think that bitcoin will become world-important - it will remain in a niche.  Like all crypto.  People will never pay their groceries with crypto.  Forget that.  Fiat systems will remain in place as long as humanity is still in command and states exist.

Where I sort of don't agree with you, but I don't care much, is that I have good reasons to think that bitcoin's design has too many clunky crypto design features to be the product of a mind like Nash.  But it could be ; but as, moreover, Bitcoin's monetary philosophy is ALSO not in agreement with Nash ideal money, I tend to reject the hypothesis that Satoshi was Nash.  I tend to think it was a guy with some bright ideas, and some limited crypto and math understanding, and some limited economic understanding, that made bitcoin in his basement.  But I could be wrong.   The "design features" that I find clunky in bitcoin, don't break it, but they are simply clunky.  There's nothing "brilliant" about them.

Where I don't agree with you is that bitcoin is designed by the "global elite" because apart from a gambler's token, it is not going to go anywhere that can interest the "global elite".  The sleazy business it is profiting is not the global elite, but second-hand maffioso.  And if it were, against all odds, designed by the global elite, it is a failure in any case.  Don't stare yourself blind on the "market cap" of bitcoin: that's nothing else but one big huge speculative bubble, driven by greater-fool games.  The economic value of bitcoin (the value creation it allows over its competition: fiat, in economic activity) is most probably 100 times smaller, and dominated by dark web markets, its main economic utility for the moment.  Bitcoin's economic value must at most be a few hundreds of millions of $$ worth ; that is, the value creation it helped create which wouldn't have been possible with fiat because of legal or other obstacles.  The 20 billions are nothing else but greater fool speculators waiting for still greater fools.  If they don't find greater fools after 10 years or 15 years, that bubble will collapse.  But there are still a lot of greater fools to be taken, so as long as the black tulips rise in price, you will find speculators flowing in.  But that is not economic value.