> I think the disconnect is in the type of creation, the higher-end production quality you want, rarer iOS devices are. And the corollary is, if you only care about the highest-end of creation, they essentially become invisible.

For producing stuff for computers or for industrial design (e.g. CAD or architectural drafting), yes. In other areas, tablets and phones are ubiquitous tools, and if they vanished tomorrow they wouldn't be replaced with e.g. laptops—they'd be replaced with paper, with various single-purpose devices, et c.