i think because they don't know there exists a good alternative.
I have had good experiences with explaining things to people.
@3rik auweia, das weckt vertrauen :/
@3rik open tech summit organizer here. Often there's no time or resources to install / setup / operate a self hosted open source solution. It's a painful trade off for me personally.
My feeling is that many organizations are to stingy with giving some coins to a Free Software solution when they can get the Google solution for zero Euro. And the convenience to use their gmail adress "for everything"... However, they pay with our data and freedom.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!