Devices are definitely listening to create targeted ads, why isn't this a bigger thing?

So there are many videos, testing that hypothesis and actually confirming it.

I also noticed it quite a lot where i was talking about a specific product that would be needed, for example my girlfriend complaining about my mattress, that it gives her back pain and i need a new one (Never googled it, only she complained to me to buy a new one) and 1 day later, I get ads for new mattresses.Another example is, that i was asking …

ads back devices isn listening lot privacy product talking targeted ads testing videos