Opening up access to the wolfram language will let more science be possible using Mathematica and remain reproducible by non-Mathematica users. Must be a good thing.

Why is it a good thing to let more science be possible using Mathematica?

The issue with Mathematica for science isn't that it's expensive, it's that it's proprietary and secret.

Because it better enables people to produce results. Those results can be verified outside of Mathematica.

Do you only work on projects that are 100% open source?