Bitcoin expansion was similar to Universe inflation: very rapid initially, much slower later.
Example: btc "was" about 0.003 when Laslo purchased 2 pizzas for 10000 btc in 2010.
From 2010 to 2012 ($15.4) was a 5133X price expansion
From 2012 to 2022 (now) was "only" a 1240X expansion in five time longer period (10 years).

projecting: ~300X price expansion in 50 years or $5.73mil by 2072. Quite doable.