Well, someday it will be $1M and then the next would be close to that $5M and maybe finally Hal's thoughts about it being $10M. There is so much wealth to the world that haven't distributed yet and it might be through Bitcoin soon.
I don't think the likelihood to reach $5M is very high.
Volatility of Bitcoin is dropping, but mostly bull markets are now less steep, while our cyclic crashes still lose around 70% or more.
In 2012-13 we had a run from $2 to $1100 (about 50000%), in 2015-17 we went from $150 to $19000 (more than 12500% but already less than in 2013), and in 2018-2021, "only" from $3000 to $69000 (2200%).
Note the decreasing percentages? I don't think the cycle high in 2025 will be higher than $200,000 (which is a very optimistic prediction); then our run would have seen around 1300% (from the $15000 "FTX crash" price low).
And "wealth" isn't something that abstract. Wealth is mostly based on work and resources. Bitcoin cannot solve resource distribution problems on its own, it's only a currency (besides of the little work/resources created by the "crypto industry"). It can perhaps help with some tasks though, see
this thread for an example.