Yes but those technologies are far more expensive. Remember Wyze’s mission is to bring these products to us at an affordable price. The processing & storage required for 4K and 8K is significantly higher than 1080p (by an order of magnitude and more), and therefore literally every component would need to be replaced with a far more powerful (and therefore more expensive) component, from the camera sensors, to the processor, to the wifi chip itself and / or the addition of ethernet. Basically they’d need an entire new SoC.
The cheapest 4K camera module I can find alone costs as much as a wyze cam outdoor with base station:
And an 8K camera module is $275:
I agree that this would be awesome, but something I’d much rather see before all that is a timeline in the app, not this list of event videos that is near impossible to find the event you need, having to click each one individually, scroll through, back out, next one… very very tedious.