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Winning Product / Winning Startup

Helping to turn your inspirational startup ideas into successful, market-ready products.

Newsletter · By Jim Berkowitz · Official site

Indexed issues, last 90 days
4
Latest publication
Aug 27, 2026
Audience
Checking…
Earliest in this view
Jul 8, 2026
The latest indexed work is over 30 days old. There may be a gap in what we hold.

Latest issues

  1. Issue · Aug 27, 2026

    Founder-Market Fit Can Get You Funded. Founder Dependency Can Impede It. (opens the original)

    Excerpt · Critical tone

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    <img alt="" class="sizing-normal" height="974" src="https://substackcdn.com/image/fetch/$s_!mZ4J!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcef3d1b4-a64c-4b5f-98cc-6f33c3ab6977_1533x1026.pn

  2. Issue · Aug 12, 2026

    The Evidence Gap in Early-Stage Startup Investing (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="974" src="https://substackcdn.com/image/fetch/$s_!X4sJ!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F654c4534-4a2e-499b-9320-5c2e5a222895_1533x1026.pn

  3. Issue · Aug 4, 2026

    A New Direction for the Winning Product / Winning Startup Newsletter (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="550" src="https://substackcdn.com/image/fetch/$s_!rEbq!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3d40da7c-0963-49b8-aa30-72d573dadeaa_1300x550.png"

  4. Issue · Jul 8, 2026

    The Most Expensive Startup Mistake Happens Before You Write a Single Line of Code (opens the original)

    Excerpt · Critical tone

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    <img alt="" class="sizing-normal" height="973" src="https://substackcdn.com/image/fetch/$s_!LG63!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa8a70a2d-d9bd-479a-be2a-1f6c306d9405_1534x1025.pn

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