I came to the forums looking for an answer to this question. Late last year, I chose to drop Adobe since after using their products since the mid-nineties because I no longer wanted to shell out the yearly subscription fee. I chose Affinity Photo and Designer as my replacements, and presumably will purchase Publisher once it is released.
My main computer is a Mac, but I occasionally need to use a Windows laptop that I own as a secondary device. I would like to encourage the Affinity team to consider a discount for owners of the apps on one platform purchasing the same apps on the other. I fully believe in supporting the company, so I'm not even asking for the apps on the other platform to be made available for free. A discount would be helpful, though.