Consider how long it took PCs to reach the same stage (with a fraction of the adoption). It was like 20 years from Kenbak-1 to the 90s PC era.
IMO the iPhone was the 90s PC era where these things got a lot better and more ubiquitous and less fragmented.
And (also in my opinion) coincidentally 90s led into an the era where overly dominant OS vendor(s) were crushing the fun and freedom out of computing. Phones are harder to escape from that than with PCs though.