The study was conducted by the PCGamesN portal using the Steamidfinder service.
Only 10% of Steam accounts are accessible for analysis. The study was based on these accounts. The owners of these accounts spent $1.9 billion on games they never launched. The journalists from the portal simply multiplied this figure by 10.
❗️The service does not consider whether a game was purchased on sale. Therefore, the actual figure could be half as much.