So i have been wondering for a while now, how do people, like me, without a windows based computer get their ESCs updated? Do you use your mac or just buy a PC that can run the softwares?

If you have an Intel based Mac, run Boot Camp and install windows on a partition.

You can download the ISO image file for windows 10 for free by the way, from Microsoft. No unlock/product key needed. It will have a few customization settings locked out, but is full function otherwise.