I'd love to see a non-profit organisation like Mozilla pick this up, but that's obviously going to mean a lot less money going to Troy. OTOH, it's kind of difficult to begrudge Troy gaining financially from HIBP, since he's spent years building it up and has helped increase security awareness for so many people.
HIBP only works because of trust in Troy Hunt, few organisations have that. Maybe an organisation not involved in advertising at any level.
Since Troy will still be involved, hopefully he can steer things in a direction that benefits everyone - or at least warn the public otherwise.