https://www.cnet.com/news/lg-g7-google-assistant-button-vs-samsung-bixby-button/

Samsung last year debuted a button on its Galaxy S8 phones that triggers the company's house-made Bixby Voice assistant. Bixby took months to roll out, but has since become a constant feature on high-end Galaxy phones. Now, LG has done the same, adding a hotkey on the LG G7 ThinQ that opens Google Assistant after you speak a command.

Google Assistant is already integrated into the Android phone's home button. You can also launch it by saying, "OK, Google." So why would LG want a third way of calling up Google Assistant, if not to simply and blatantly copy Samsung?