Amazon's first-mover advantage resulted in an imposing 94% market share by Q3 2016. However, since then, Google Home has shown some growth in the market, reaching a little over 34%. Some predictions show that Google Home will take over Amazon Alexa by 2022 (see the following graph).
Google Home is the brand of smart speakers that is developed by Google. The first device was released in the United States in November 2016.