Valve is a $2-4 billion company known for its digital distribution platform Steam. It holds 50-70% of PC download sales and is more profitable per employee than Google or Apple. Valve's success is attributed to strong sales revenue from Steam, its 70/30 revenue sharing model with developers, cloud storage of games, and an organizational structure that promotes creativity. While Valve has faced jokes about its inability to count to 3 based on sequel release gaps, it is predicted to continue succeeding due to private ownership, diversified profits, and an engaged community.