I don't think all breeders get rid of the mothers because " they can't make money ". If your a "breeder" and your doing it for all the right reasons, you can't keep them all, if you find a great home for them to go too, it's not like they are gone for ever, I am sure they all keep in contact, send pictures and even visit if they are close enough! At least this is how I would do it if I had too, but then again I couldn't be a FULL out breeder, I was heartbroken for a month crying all the time when my 10 week old shihtzu passed away