This scarcity is achieved through the process of mining, where miners solve complex mathematical puzzles to validate transactions and create new blocks on the blockchain.
Bitcoin scarcity follows the trail of bitcoin mining down to the mandated 10 minute block mining duration, 2 weeks mining difficulty and halving. Bitcoin mining made bitcoin what it is today. Think of how many USD is equal to 1 bitcoin. Illustrating how highly inflated fiat is. But, if, bitcoin wasn't scarce it would be a weak technology with minimal value. Minting bitcoin out of thin air, or if the government manipulated and controlled halving, a reserved bitcoin won't exist. If anybody can perform 51% attack and double spending - the idea, algorithm and tech, of bitcoin wouldn't make it thus far.
There is no provision within the protocol to extend or delay the halving events beyond the predetermined schedule.
Adding more available coins or changing the halving schedule would require a hard fork of the Bitcoin network, which would likely result in a split and the creation of a new blockchain.
Having no provision for such in the protocol would lead to no hard fork. Miners get discouraged of such nuisance it'll cause, that they don't execute or follow a hard fork. Those that try to manipulate the algorithm will get staled or orphaned.
From the above I just got better understanding that even the man who invented Bitcoin has no monopolised power or single power to alter the trend of Bitcoin and halving period. It has to be consensus between many Bitcoin users .
To me the institution of bitcoin scarcity is teaching the world that a monetary system can be managed with no central body, while maintaining the circulation limit. It would need a million and one man power, if it was a manual process. More meaning to why mining a block takes up much electricity. So, bitcoin design revolves on an appointed time, to execute a function.