Why do we assume the original protocol will endure?

Leading-Fail-7263
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Why do we assume the original protocol will endure?

If I understand correctly, the protocol has not changed significantly, if at all, since the genesis block.

The original protocol renders key attributes of bitcoin:

  • finite supply
  • respect of physics (PoW as a consensus algorithm)
  • use of secure cryptographic hash functions like SHA-256
  • etc.

I have two questions:

  1. Why do we assume the protocol, or at least these aspects, will not change?

  2. If these aspects were to change, and most nodes would switch to a different chain with the new protocol, would this fork be a “new token”?

For instance, if SHA-256 was broken and 99% of nodes switched to the fork using a more secure algorithm, would the bitcoin token on this fork initially (in the first minutes of its existence) have a low market value?

Thank you.

These are all abstract questions which in all likelihood will have little relevance to actual events. However, they are very useful for my understanding, so I am grateful for help community members can provide.