Yea, google has a competitor called chat. As other comments have said it doesn't really stack up with teams/slack, but the video system is pretty good. It works well enough, an has seen consistent improvements over the year. Doubt any company would specifically choose google chat, but I know that many that already have deals for g-suite are using it. The thing is pretty much every company has a contract for office or google chat these days. Hard to imagine paying for slack when you've already got these free apps available.