Interesting thesis and I like it.  A couple of caveats:  if the big 3 miners collude it could pose some risks, though we've not seen that yet.  And bear in mind that while that each halving halves supply, but also halves security, and that will be something that needs to be addressed 10-20 years from now.  One way would be to increase fee bearing transactions in line with the hardware (disk, memory, network) of the day, and software capabilities.  Things that could mitigate this are stratumv2, ocean mining, utreexo, increased mempool.  But chain split is bigger risk than reorg for now.  Still a bit of work to do before we can say btc replaces gold.