You can probably tell roughly number (and size) of sofa, chairs, tables, shelving units in each unit. Amount of carpet vs floor space. Total floor space.

That lets you build a dataset of these numbers correlated with all the other things Amazon knows about you. Then target you for ads.

Maybe, it notices that your coffee table is smaller than average than other similar people/apartments. They also know you have previously bought dark colored fake wood furniture before. So they advertise dark colored coffee tables to you, in the price range you would be able to afford.

Floor plans aren't public record, only a rough outline of building size. Go pull up your county's record of your house. At most, you'll get a box diagram showing sizes of different sections of your house, but nothing to indicate the actual layout of anything. These robot vacuums collect much more detailed information than that on millions of houses.

Floor plans are not public record in my country.

Even where they are public record, there are often limits. San Francisco limits you to six requests per day, costs $0.10 per page, and must be applied in person or via mail.

https://www.sf.gov/requestbuildingrecords

Alas no: https://www.technologyreview.com/2023/01/10/1066500/roomba-i...

I mean, I assume the tax assessors don't take a photo of you taking a shit and put it on your property record card?

I’m not sure Apple’s the best example for you. https://www.nytimes.com/2024/01/05/technology/antitrust-appl...