"Good sensors are expensive"-fun-fact: Mid-range CCTV cameras often have bigger sensors (1/1.8" or 1/1.2") and much faster lenses than an iPhone 13 Pro Max (1/1.9" for the main camera). The CCTV camera package is of course far bigger though. But still kinda funny in a way.

Edit: And the lenses on these are not your granddads computar 3-8/1.0, either. Most of the CCTV footage we see just comes from old, sometimes even analog, and lowest-bidder installations.