I love that little nugget of info at the end. You could originally run excel standalone without an OS and it came with windows 2.1 bundled
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"Until May 1987, the initial Windows release was bundled with a full version of Windows 1.0.3; after that date, a "Windows-runtime" without task-switching capabilities was included"
I actually thought it was cut-down, but it only had task-switching disabled.