[YesThatTom2]

At first, MS didn’t mind as long as SAMBA only implemented the outdated older protocols.

Then they realized interoperability could make them more money, and they invited him and his team to Redmond for a week of working with MS engineers to understand the latest protocol versions. Oh wait, no, it was because the EU forced them. https://www.theregister.com/2007/12/21/samba_microsoft_agree...