The demand for Bitcoin has mostly been due to speculation rather than real world utility. It's been an amazingly profitable asset, if you got in early. But Distributed Ledger Technology is evolving, and there are more scaleable options around that provide real world utility, faster and cheaper. I believe the demand for cryptocurrencies and digital assets will increase exponentially with adoption, but Bitcoin dominance will wane as the opportunity cost of holding it increases. As cross-chain bridging evolves people will chase quicker gains and higher yields. As for every day purchases, there will be Stablecoins (either centralised or Algo's).

Thanks for the article - I acknowledge it was more about inflation rather than the purchasing power of BTC.