It can still be a case of searching for novelty. I think my mother did this while I was growing up - she would try out new replacement products (primarily food) and start buying them for a while, until the household got fed up with them and we went back to the old product. Repeat purchases for sure, but the only draw was novelty. Trying out a new type of milk instead of the old one, etc.

Gadgets too - We got a bread baking machine, and used it quite a lot for a year or two, then people got tired of it being somewhat impractical, it ended up in the back of the cupboard and finally thrown away.

Wouldn't be surprised if there is a group of people for whom it is very rewarding trying out new products, and many products you can't just buy once and then consider it "tried out".