"Free software" is about freedom, not price. Putting the research that is your life's work inside of proprietary software that can be taken away from you, forever, at any time — that seems foolish.
Only if you violate the license.
By the way, I'd be interested in your thoughts on https://news.ycombinator.com/item?id=22083468 https://news.ycombinator.com/item?id=22083468.