Three companies that never cease to inspire me;
Blizzard Entertainment - been around awhile, but after Warcraft: Orcs and Humans put them on the map, they have expanded Warcraft into a mega property. Now it's an immersive world where people spend countless hours (and dollars). The fans get the escape and Blizz gets the coin and everyone is happy. They do this so well. Everthing from their artwork, stories, games, accesories...all is just expertly done.
Games Workshop: These guys make great games, books and miniatures. They have stayed in their lane as well and created a fantasy and science fiction setting with a feel like no other.
Paizo Publishing: They have taken an adventure concept (Pathfinder) coupled it with great art and generated a whole property. Pathfinder is growing well beyond a way to do RPG adventures into an RPG of its own. I predict fiction set in that universe and probably other sorts of media as well.