Here's what I have found regarding this:

"Thanks F3nd0! There are currently no plans to switch to a less permissive license.

And we're perfectly happy using proprietary services like GitHub and Discord as long as they make our work easier and more enjoyable. We recently evaluated a number of alternatives, and found that they all introduced more friction than we were comfortable with.

Although the task of building a browser is itself challenging, we're a pragmatic project :)"