Ryuu96 said:
It was always baffling to me that anyone ever seriously suggested Sony could or even would block Xbox branded devices (and even the next Xbox/PC hybrid console) from playing PlayStation games. They have literally no reason to (folk need to stop thinking the next Xbox will compete with PlayStation) and not to mention it would be a frigging nightmare to even...How do you block it? Lol.
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It would be cumbersome and honestly beyond petty to do so, but it would most likely revolve around MAC addresses. The entire core principal of networking is that in order to connect to anything (internet then to a server, etc) a MAC table has to be established between the source and receiving first before an IP address is provided and the device can then connect. And the whole point of a MAC address is that it's unique to that specific device. No 2 MAC addresses are the same, BUT, the first half of a MAC address is unique to the manufacturer.
The way Sony could potentially do it is by constantly scanning for all devices whose first half of their MAC begins with, in this particular case, ROG Xbox Ally, and ban that manufacturer MAC.
The key difference though is how Sony would handle single player only games. Because the games are still hosted on Valve's and Epic's servers. Sony could only do the scenario I mentioned on the games that require a PSN account on PC. If you're downloading God of War or Days Gone, I have no idea how Sony could prevent that. And I doubt Valve or Epic would be interested in providing dedicated resources in helping Sony find a solution.