Try doing the slack step of clicking on the phone icon to start a call, then adding screen sharing.

We pay for gsuite and we pay for slack. google chat is no where yet.

You click the video button, switch tabs, and click the screen share button. I agree that chat sucks compared to slack and teams, but it's got enough functionality to not be a deal breaker for companies that are already paying gSuite. Especially if they've never used the superior competitors.