That may have been the intention but I can’t find any which have panned out. Mozilla is straddling that weird line of operating both a non-profit and for-profit entity… and as a for-profit incubator for the next big thing, they have a pretty terrible track record.
Yes, your escrow can go up that much if your property tax, school tax, or in some cases insurance had a sudden jump in value or changes in what can be claimed. It varies by area and loan, but isn’t unheard of.