[DNF2]

There's another issue. In addition to the open source license and what it promises, when you accept contributions from others it isn't just your work anymore. LightGraphs had 100 contributors, what about their efforts? Not to mention additional work that others have done on top of that in other libraries.

Who would contribute to a software library if they knew that the main dev could just mothball their efforts at any moment.

If you have donated a ball, you can no longer just pick it up and go home. If you don't want to donate work, don't do open source and invite others to join in.