例えば、
https://github.com/timdetering/Wintellect.PowerCollections/tree/master
License.txt
4. COMMERCIAL DISTRIBUTION
Commercial distributors ofsoftwaremayaccept certain responsibilities withrespect to end users, business partners andthe like. While this licenseis intended to facilitate the commercial use of the Program, the Contributorwho includes the Program in a commercial product offering should do so in a manner whichdoes not create potential liability for other Contributors. Therefore, if a Contributor includes the Program in a commercial product offering, such Contributor ("Commercial Contributor") hereby agrees to defend and indemnify every other Contributor ("Indemnified Contributor") againstany losses, damages and costs (collectively "Losses") arising from claims, lawsuits and other legal actions broughtby a third party against the Indemnified Contributor tothe extent causedby the acts or omissions of such Commercial Contributor in connection withits distribution of the Program in a commercial product offering. The obligations in this section do not apply toany claims or Losses relating toany actual orallegedintellectual property infringement. In order to qualify, an Indemnified Contributor must: a) promptly notify the Commercial Contributor in writing of such claim, and b) allow the Commercial Contributor to control, and cooperatewith the Commercial Contributor in, the defenseand any related settlement negotiations. The Indemnified Contributormay participate inany such claimatits own expense.
For example, a Contributor might include the Program in a commercial product offering, Product X. That Contributoris then a Commercial Contributor. If that Commercial Contributor then makes performance claims, or offers warranties related to Product X, those performance claims and warranties are such Commercial Contributor's responsibilityalone. Under this section, the Commercial Contributor would have to defend claims against the other Contributors related to those performance claims and warranties, and if a court requiresany other Contributor to payany damagesas a result, the Commercial Contributor must pay those damages.
要約すると裁判でここの作者が損害賠償を命じられそうになった場合、商用ソフトの提供元は裁判に協力しないといけないし、求償請求にも応じないといけないとある。