Well, in early 90s it was NES games: Darkwing Duck, Super Contra 6, Robocop 4, Battle city. Then, in lately 90s it was PC games: Half-Life, Warcraft 2.
There is an standard client-server encryption in Telegram. If you want e2e encrypted chat, then use Secret chats. Almost all messengers nowadays use client server encryption. So the biggest problem is not man-in-the-middle attack, but physical access to device by someone and malware installed via breaches.
I guess it's only for streaming from PS