When Warcraft 3 Reforged initially came out, Blizzard made it LITERALLY IMPOSSIBLE to play the original game through their platform. It just got replaced with Reforged, which you couldn't play if you didn't buy it.
The only way to play Frozen Throne at that point was pirating it
Why do people always act like games getting remade means the original stops existing like p4g is on steam right now man nobody is stopping you from still playing it