The Mini and Studio are, IMHO, unnecessary chunks of aluminum require routing signal chains and the, then, necessary ports and cable(s) to connect the primary display along with requiring two separate power supplies and all the extra materials and hardware associated.
The genius of the all-in-one (read: iMac) is reduced footprint and materials and direct connection to the display and a single power supply. 5nm/3nm/?nm circuitry allows for small-form modularizing of the CPU/GPU internals negating the need for giant aluminum (e-wasteful) housings (read: Minis, Studios). Snapping on a module in the rear provides the user choice between Display and Computer and, in providing an upgrade path for both/either, it negates the need for Minis and Studios.
That Apple were to then broaden its display offerings we could see a world where authors could purchase true B&W work panels, average users could purchase SDR-class panels, creatives could purchase HDR panels, gamers could purchase high-refresh-rate panels, etc., all native, smart, and OS-aware. It's a paradigm shift from computer power prioritization "think" to display options prioritization "think".
Again, a lifetime of gear, and stock options will work, Tim! LOL