Gates and Allen found Microsoft as a partnership
On 4 April 1975 Bill Gates and Paul Allen founded Microsoft, a completed partnership that later became the dominant PC software firm. In the causal graph this event strengthens the driver Industrial-Policy Activism.
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On 4 April 1975 Bill Gates and Paul Allen founded Microsoft, a completed partnership that later became the dominant PC software firm.
Context
Altair BASIC was the first product. Neighbouring IBM DOS is 1981. He did not write an IBM corporate statute.
IBM DOS 1981 is neighbouring. The 1986 IPO is later capital.
Bill Gates was Microsoft CEO until January 2000, chairman until February 2014, then a technical adviser until 2020, and a Gates Foundation co-chair. That is not authorship of every Windows copy, every GAVI dose, or every IRS schedule. Melinda French Gates is a different person. Bill Clinton is PER-000772, a different person. A pledge is not a coverage rate. A docket is not a personality.
Why it matters
The path is industrial-policy-adjacent software capitalism: a completed founding is an employment-and-productivity instrument with later monopoly costs stored separately.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Bill Gates
PersonDirect responsibility
responsibility level 0.55 · verified
He co-founded with Allen. Customers bought BASIC. IBM later licensed DOS. Courts later sat on tying.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactGates and Allen found Microsoft as a partnership
- strengthensDriverIndustrial-Policy Activism
impact weight 0.4 · Effect from 4 April 1975 · verified
Founding a scaled software firm is a completed industrial-capacity instrument.
- FactGates and Allen found Microsoft as a partnership
- strengthensDriverLabour-Market Tightness
impact weight 0.25 · Effect from 4 April 1975 · verified
A completed software employer is an attempted skilled-labour demand instrument, with lag.
Evidence
The sources behind this fact and its verification state.
- 1.Reuters — Microsoft founding by Gates and AllenReuters · High credibility · verified
- 2.Microsoft — company founding 4 April 1975Microsoft · High credibility · verified
What the sources establish
Microsoft carries the official instrument or communique. Reuters records the same dated act independently.
Established: 4 April 1975 Microsoft founding, independently reported.
Not established: that every later PC job is this partnership, or a unique later inequality coefficient from Albuquerque.
Customers bought BASIC. IBM later licensed DOS. Courts later sat on tying.. A later repeal, court stay, or successor order would be a different Fact with a different date. That pair identifies Gates and Allen found Microsoft as a partnership, not a later speech about Gates and Allen found Microsoft as a partnership.
Co-authors and later implementers named in Context remain on the file. If a later repeal, stay, or successor instrument exists, it needs its own date and its own row. The contribution described on this Person row is limited to He co-founded with Allen. Customers bought BASIC. IBM later licensed DOS. Courts later sat on tying. That limit is the alternative to treating office-holding as authorship of every later series.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorBill Gates
- contributed toFactGates and Allen found Microsoft as a partnership
- strengthensDrivers (2)Industrial-Policy Activism
Cite this page
Factrail. (2026). Gates and Allen found Microsoft as a partnership. Factrail. https://factrail.ai/facts/ms-founding-1975
https://factrail.ai/facts/ms-founding-1975
Accessed 15 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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