A workaround for the wirless-driver

[ststeiger]

Purely hypothetically speaking:
Because the USB is working, you could work around the wireless driver with USB tethering.
If you'd install a OS-X driver/kernel-module/kernel-extension for USB-tethering, such as

https://github.com/jwise/HoRNDIS/releases
https://joshuawise.com/horndis

the network should work.
Connect the hackintosh with your Android-phone via USB, and enable USB-tethering on the phone.
OS-X now connects to the internet via Android - if Android connects to the internet via WLAN or 4G.

This way, you could get networking to work without buying something;
assuming you have an Android phone !

[mbirth]

It's 2020 now and there's https://www.tonymacx86.com/threads/success-working-intel-wifi-drivers-for-7265ac-on-catalina.292207/ and https://github.com/OpenIntelWireless/itlwm/blob/master/.github/README_en.md .