The latest research on smart-home tech uptake has shown that 29% of all broadband-using households in the US polled owned at least 1 such device. This is a change of 20% compared to 2018. However, concerns about personal data remain a major barrier to this category doing even better.
https://www.notebookcheck.net/29-of-US-high-speed-internet-households-now-have-a-smart-home-device.448914.0.html