As for lightbulb data, I am not sure have valuable this will be,...

As for lightbulb data, I am not sure have valuable this will be, who wants data about how often you turn your lights out or change colours, seriously?

Apparently Google and Amazon already get it.

Your Smart Light Can Tell Amazon and Google When You Go to Bed

The tech giants are demanding a continuous stream of customer information from smart-home manufacturers, prompting privacy concerns. 

For several years, Amazon and Google have collected data every time someone used a smart speaker to turn on a light or lock a door. Now they’re asking smart-home gadget makers such as Logitech and Hunter Fan Co. to send a continuous stream of information.

In other words, after you connect a light fixture to Alexa, Amazon wants to know every time the light is turned on or off, regardless of whether you asked Alexa to toggle the switch. Televisions must report the channel they’re set to. Smart locks must keep the company apprised whether or not the front door bolt is engaged.

https://www.bloomberg.com/news/articles/2019-02-12/your-smart-light-can-tell-amazon-and-google-when-you-go-to-bed