For a time Fitbit products were very visible at Apple Stores when Fitbit wearables like the Fitbit Flex were the 'It' products. Fitbit devices worked great with Apple iPhone and iPad products and together they formed a great fitness tracking and management solution. However, as Fitbit decided to go their own way with their own fully featured watch like the Fitbit Blaze and not support Apple's HealthKit, Apple kindly showed them the door to make more room for Apple's own Apple Watch.
And then of course there is everyone's favorite IOT product, Tile, which was somehow placed in the wrong section for someone to "find".
With this rich IOT ecosystem ready for purchase today at any Apple Store, Apple really shows the power it has to quickly bring to market a working set of IOT products through Apple driven API's and frameworks such as HealthKit and HomeKit, vying against more fragmented approached by Google and others in the industry.