It would be smarter to look for pools of products and be less targetted. E.g. to know that people who buy long lived leather belts may also be interested in long-lived leather wallets, or long-lived shirts, or glass containers instead of plastic, etc, and then rotate all these products in, rather than this targetted barrage of non-stop belt ads for the next year. This just can't be the optimal advertising strategy, there must be diminishing returns to this level of specificity.