Vic Gundotra (VP Google) said back when Microsoft bought Nokia that "two turkeys don't make an eagle". Google officially has become the Microosft of the mid 2000s. Lack of direction and innovation, buying up companies just for the sake of it. Here is a link to Google's anology: https://www.techspot.com/news/42338-google-attacks-nokia-and...
Google has a long and successful history of acquisitions, as also a long history of lack of direction and headless actions even in their youth days. It's probably just natural for a company with too much money to invest that way.
Their only notable hardware acquisitions that I can think of were Motorola which was a disaster, Nest which is barely muddling along, and the semi-acquisition of HTC’s hardware team that made the Pixel. While the Pixel may be a great phone, it isn’t taking the world by storm