They do. If I want to play one game, then I have to grab the disk and put it in its specific console to play it with its launcher. There's some exceptions, like gamecube games can be played on Wii's using its hardware and launcher. But if I want to the play a PS4 game, I have to switch to that hardware and the PS4 launcher. On PC, at least I can use retroarch as a single unified launcher for many consoles instead of buying several consoles to use each of them as a distinct launcher and steam for most everything else. No switching to the PS# launcher to run some things and the Switch launcher for different games. Even if a game has its own dedicated launcher on PC (probably enough reason for me to not bother playing), its still better than having to physically swap hardware to use its launcher.