Where'd we get Lews is doing bad ? I've never heard that. As far as i know they are doing really well. They sell plenty of high end reels that compete against shimano and diawa just fine.
Quantum at one point was doing really well. Can't answer what went wrong.They are currently owned by the same company that owns Lews. Why they haven't done what they did with Lews to Quantum I don't know. Maybe they have future plans.