It wouldn't surprise me if this was a goal but they should really figure out basic recommendations first.

I just bought a power washer. I bought it on Amazon. Amazon easily knows I now own a power washer. And yet Amazon is giving me a ton of recommendations for power washers.

This is a constant problem with recommendations and everyone I know has the same experience.

And unless there's some sort of data regulation preventing them from applying my purchase history to their recommendations it's ridiculously easy to fix. Tag item categories as "1 per household over x months" and when someone purchase amount goes beyond the threshold stop recommending products from that category until x months has passed.