There's definitely been a shift in what it means to be a multiplayer game. Live service games are crowding out the other forms.
Split-screen, LAN, and even Internet play without fixed servers all existed once upon a time (and still do, to a limited extent). But they aren't what people usually mean when they say "multiplayer" anymore. However, they all have the advantage of staying playable basically forever, with the only real limitation being the ability to emulate older tech.
Split-screen, LAN, and even Internet play without fixed servers all existed once upon a time (and still do, to a limited extent). But they aren't what people usually mean when they say "multiplayer" anymore. However, they all have the advantage of staying playable basically forever, with the only real limitation being the ability to emulate older tech.