Scammers and thieves are using data brokers more and more all the time. They already buy up lists of rich elderly people, lists of people with dementia, and lists of people with low IQs or poor educations who are often easier to trick out of their cash.
Most criminals breaking into houses aren't buying up targeted lists of likely victims from data brokers yet, but it's effective so you should expect that the number of criminals turning to those resources will only increase.