Slot machines used to fill casino floors with giant cabinets often over 40...

https://miasimpressivethoughts.rivetgarden.com/posts/why-do-slot-developers-care-about-aspect-ratio-so-much

Slot machines used to fill casino floors with giant cabinets often over 40 inches tall. Now many fit comfortably in your pocket on screens just 6 to 7 inches wide