Earlier quoted context omitted.
Users won't lose anything purchased - your google login will stay the same (Same as you can use your Yahoo e-mail as google login), you will just lose g suite domain hosting.
I'm not following your line of thought. G Suite domain hosting includes the email address and the user licenses (albeit free ones.) If you stop paying for G Suite (Google Workspace) the user licenses will be revoked. They will not be able to login to Google services, access Play Store / Music / Movies purchases, etc.
"If you don’t upgrade to a Google Workspace subscription, you will not lose access to other Google Services, including YouTube, Google Photos, and Google Play, nor paid content, including YouTube and Play Store purchases."
Source: https://support.google.com/a/answer/60217?hl=en#zippy=%2Cwha...