These individuals, who have gone through natural selection and acquired 2.625 Bitcoins on the market, could unite, for example, in a religious Order, and gain the chance to change the world order. This trend is already emerging today.
I can see that you are either overthinking or overimagining the whole thing about Bitcoin, which is not really good because your idea is not what will happen. I was even shocked to see that you are concluding that your imagination is already taking place. How do you believe or think that only a few people can hold down Bitcoin because of some kind of religious belief? First, you should ask yourself if the whole world is practising one religion, or perhaps do you only suggest that it's just a few individuals that are in the same religion that will accumulate all the Bitcoin? It's never been possible, and it's not becoming possible any day.
Allow me to answer your question with a question. Strictly speaking, Bitcoin can be "printed" by changing just one line of its source code. And if 51% of miners reach a consensus around this version of Bitcoin, we could indeed increase the maximum supply to 30 million or 50 million. So, why is the number 21 million significant? Is it your religion?
/** The amount of satoshis in one BTC. */
static constexpr CAmount COIN = 100000000;
/** No amount larger than this (in satoshi) is valid.
*
* Note that this constant is *not* the total money supply, which in Bitcoin
* currently happens to be less than 21,000,000 BTC for various reasons, but
* rather a sanity check. As this sanity check is used by consensus-critical
* validation code, the exact value of the MAX_MONEY constant is consensus
* critical; in unusual circumstances like a(nother) overflow bug that allowed
* for the creation of coins out of thin air modification could lead to a fork.
* */
static constexpr CAmount MAX_MONEY = 21000000 * COIN;