Bitcoin succeeds because it proves its inability to change.
While that may be true for block size, I would not say that Bitcoin have inability to change, because we see changes in code all the time and latest will be Taproot.
It just exists whether you like it or not and you can't control it or change the rules to your liking.
One person can't change anything in Bitcoin but he can propose things and with influence of big players, holders and miners, change is always possible,
and Like in some altcoins that tried to copy Bitcoin, we can see more centralization of mining in one or two pools.
A disagreement about how large blocks of the blockchain should be, how easy it should be to change Bitcoin's rules, and ultimately it was about control.
Everything is about control and not just in Bitcoin but anywhere where big money is involved, and for some people control is a like a drug.
Rockefeller said, ''Own nothing, but control everything.''