If Bitcoin became large enough it certainly would however not all of Bitcoin's value is creative destruction which is a net zero system.  Bitcoin does create real value, maybe a better word is utility.  Now how much that utility is worth may be up for debate but it isn't zero so the Bitcoin network does create "new" wealth.

The replacement of traditional banking would be creative destruction but that is only one such scenario.  Another scenario is Bitcoin remains a niche and people continue to use traditional banking just as much as before.  Another scenario is that banks co-opt Bitcoin providing "wallet security services".  Many people think banks must be fiat but banking existed prior to fiat currencies.