Yeah maybe leave out "profitable," it's too fuzzy and hard to verify. One of the bettors simply expressed skepticism that there would be "fusion as part of the electricity grid," period, so just leave it at that. At least, that's what I would want if I were betting.
(I do think it's entirely possible that fusion will be solidly profitable, especially with carbon pricing.)
(I do think it's entirely possible that fusion will be solidly profitable, especially with carbon pricing.)