> Adding support has a cost that most customers don't need to pay.
It also adds heat, battery consumption, and space. For a chip that will also be used in iPads. Still I wished the base M3 chip supported at least two external displays. Or at least let you use two by disabling the internal display (eg. clamshell mode or whatever).
> most people aren't going to be plugging in three monitors into their laptops, so most people aren't going to care about this.
Last summer (2022), or thereabouts, I got a survey request from Apple where they asked how much I cared about external monitor support, followed by subsequent questions about the number of external displays that was important to me. So, Apple's looking at it.