There is someone i know who does something similar she breeds her moggies for the financial gain and one of her cats almost died. I do not have much to do with the couple any more and since then they have had a few litters of absolutely awful kittens who are so unused to getting handled that i was badly bitten and scratched then the poor little thing was cowering in the corner, now the couple want to sell one of their queens as she wont go outside and mate so she is "no use to them" the reason for this is because the cat has never been shown a lot of love and affection. that kind of thing just makes me very mad so much co that i have taken a few cats off her before and re homed them (all with the owners permission of course) now i cant do that any more as i have 3 cats of my own (one was one of the couple's cats) who do not like outsiders in their house at all since they are not keen on sharing the attention with another animal apart from each other (they dont really like my parter showing me affection lol they jump up on our knees and give us the look at me i am so cute look)