Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
In the case of MS Office (and Windows) you do NOT "own" it - you purchase a LICENCE to use it and are bound by the restrictions that are either explicit or implied within that licence..
In the case of Open Office or Ubuntu (for example) because they are free and are released under the GPL licence, you are free to do whatever you like with them, including editing the program and selling it on if you so desire.
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