That’s fair. Its just to say there is a lot of context for client verification in software. Competitive multiplayer gaming has become an arms races of exploits and invasive anti-cheat measures; there is no concept of bring-your-own-client when there is money on the line.

Valve has taken a less heavy-handed approach and let users have more freedom over their client and UI, but they also have a massive bot problem in titles like TF2.

I can’t connect to my work network from a random client, and it will throw flags and eventually block me if I connect with an out-of-date OS version.

I can’t present any piece of paper with my banking data and a signature on it and expect other parties to accept it. I have to present it on an authorized document.

I guess money may be the common denominator here.