I guess that makes sense but for me the equation would be a different one: since Mozilla is for me synonymous with Firefox I'd allocate all of the resources to FireFox and that would result in (1) a much more secure future for FireFox, (2) reduced loss of marketshare (so a better negotiation position vis-a-vis Google) and (3) a much lower per annum expense to keep that mission alive. By burning a ton of money on unrelated things FireFox is now actively at risk of disappearing. Google can point at Edge now and say they're not a monopoly, they may not need FireFox for much longer.