Estimates are that there are over 690 million Windows 7 installations. 
If they convert to Windows 8 at one per second, day and night, 7 days a week, 365 days a year, it will take over 20 years. Better hurry up.
690 Million potential Windows Store customers.
690 Million.
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About Jesse Liberty
Jesse Liberty has three decades of experience writing and delivering software projects and is the author of 2 dozen books and a couple dozen online courses.
His latest book, Building APIs with .NET will be released early in 2025.
Liberty is a Senior SW Engineer for CNH and he was a Senior Technical Evangelist for Microsoft, a Distinguished Software Engineer for AT&T, a VP for Information Services for Citibank and a Software Architect for PBS. He is a Microsoft MVP.
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