> On Saturday, August 12, 2023 at 05:54:10 PM PDT, Grant Taylor wrote:

>>On 8/7/23 12:26 PM, Jon Perryman wrote:
>> Was it a smart decision for IBM to sell the software that became Microsoft?

> Please clarify what IBM sold to Microsoft.
>   - Microsoft had (MS-)DOS independent of and without IBM.
>   - Microsoft had a non-exclusive deal with IBM and therefor was allowed
> to sell it to whomever they wanted, including directly as MS-DOS.

Stories vary widely but the most prevalent can be seen at 
https://youtu.be/Qc5khH5gllg?t=339 which I positioned around the relevant time.


The story goes that MS-DOS did not exist at that time and IBM could have 
required exclusive rights but instead intentionally gave up it's exclusive 
rights to MS-DOS for $0 during negotiations. 


    On Saturday, August 12, 2023 at 05:54:10 PM PDT, Grant Taylor 
<0000023065957af1-dmarc-requ...@listserv.ua.edu> wrote:  
 
 On 8/7/23 12:26 PM, Jon Perryman wrote:
> Was it a smart decision for IBM to sell the software that became 
> Microsoft?

Please clarify what IBM sold to Microsoft.

My understanding is that Microsoft, an existing but small company, came 
to IBM and said "here, we have an operating system for the IBM PC that 
you are developing, would you like to license copies from us for each 
unit that you sell?".

Specifically:

  - Microsoft had (MS-)DOS independent of and without IBM.
  - Microsoft had a non-exclusive deal with IBM and therefor was allowed 
to sell it to whomever they wanted, including directly as MS-DOS.

Given your following statement, I doubt that you are referring to OS/2 
in your previous statement.

> How about creating OS/2 a few years later to fill the void they sold?

My understanding was that IBM and Microsoft co-developed OS/2 ostensibly 
as a DOS successor.  One of the partners decided to end the partnership.

I'm not aware of Microsoft purchasing any rights from IBM at the time as 
Microsoft went on to develop Windows NT partially based on OS/2.  IBM 
went on to develop and enhance OS/2.

So I ask again, please clarify what did IBM sell to Microsoft in the 
context of this thread.



Grant. . . .

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