Which gaming company was the first to launch a successful digital marketplace for PC games that fundamentally changed the retail distribution model for the industry?

The gaming industry has transformed how players purchase games over the past few decades. From physical retail stores to digital marketplaces, the evolution has dramatically changed consumer behavior, retail strategies, and the overall gaming experience. This trivia question focuses on a pivotal moment in gaming retail history that changed how games are sold and distributed forever.

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Valve Corporation with Steam (2003)
Electronic Arts with Origin (2011)
Epic Games with Epic Games Store (2018)
Microsoft with Games for Windows Marketplace (2010)