Hopefully Jimmy finds out a good approach for monetization here. I would actually like for my org to pay for MediatR since it's a crucial component in many a project. Donations are so difficult from an organization viewpoint...
Masstransit and Mediatr are a strong base I build a lot of my projects, hopefully they will find a sustainable way going forward.
MassTransit has gone commercial too, not that I care but somehow ppl rely on these libraries.