I think not investing time in Mojo is the currently the correct decision. If Modular decides they have a good product and would like broad community adoption, they will make the open source and licensing decisions that would support that. They're smart and I presume aware of that dynamic, so honestly I suspect they don't want a broad community just yet.

Community management and language feature haggling is not worth the expense at an early for-profit company with an alpha language that needs to solve internal problems.