Cats just have to be taught that YOU are dominant from a very young age. You do this by holding them belly up in a cradle type position from the time they are a small kitten. If you do this they will display nearly all the traits that dog owners love about their pets, and nearly none of the negative traits associated with cats.
This may serve as a potential business. There are dog-training services, why not cat-training services?
hm... well like I said the key with a cat is getting them early enough. So I guess it’s possible you could do it for someone else (assuming the domination training would transfer)
Cats are.. more inclined to go feral, and must be taught what is needed when they are very young.