They never owned sega, where did you get this idea from

pretty sure some kids must still think roblox is a copy of minecraft

yeah same with terraria

They are just brothers,
Minecraft:also try terraria!
Terraria:Also Try Minecraft!
Meanwhile:
Minecraft:DO NOT try lego fortnite
Terraria:DO NOT try lego fortnite

I think people got the idea because Sega doesn't sell the Sega genesis nor the Dreamcast, And they had Sonic games on Nintendo consoles like Sonic Heroes being on the Game Cube or Sonic Frontiers being on the Nintendo Switch.