I don't think going commercial has been that impactful. It sucks, it betrays the spirit of open source but whatever. A few examples:

- FluentAssertions had no moat, and it has been forked as AwesomeAssertions. Not sure what the author's play was here.

- Moq lost trust - we have NSubstitute

- AutoMapper and MediatR have been widely misused anyway

- Maybe MassTransit is a real bummer?

Switching to the forks/alternatives is still time and effort, often a lot of it.