No, [PhilsHobbyShop.com] doesn't even ship to anywhere outside the US and Canada
Your previous post inspired me to add statistics to the software that powers PhilsHobbyShop.com. I have statistics, and Canada isn't even second place. It's USA, then someone else, then Canada. On the other hand, it could be that you're reporting a problem with the web software. Did something break when you went to PhilsHobbyShop.com, added an item to the cart, began checkout, and put in a non-U.S. shipping address? It doesn't appear so: the first order I saw when I logged in to an administrative interface was from (you guessed it) Ukraine.
For many businesses, the vague possibility of making an international sale is outweighed by the very real and persistent attacks coming from these dubious nations.
Then how do companies like Amazon and eBay, with their worldwide presence, fend off these attacks?
For individuals, the possibility however slim of making a sale to the Ukraine or Russia or China is eliminated, also eliminating any necessity of allowing traffic from those nations.
If a stateless firewall blocks all packets from these countries on all protocols and all ports, this would result in end-user confusion when one visits a legitimate web site hosted in one of those countries.
Is there a potential benefit that you intend to exploit there
More revenue. Lots more revenue.