What is the real purpose?

It seems that one could cover off with simple gmail accounts that have a corporate reference to them, and then only a few GSuite employees.

Is the 30 GB of individual storage a combined storage?

Multiple Accounts at Once

  1. In Chrome, in the upper right corner, click your name.
  2. Click Manage people.
  3. Click Add Person.
  4. Enter a name, choose an image, and click Add.
  5. Sign in to Chrome with the Google Account you're adding.
  6. All settings and bookmarks automatically sync.
  7. In the upper-right corner, click your name and select a different profile to switch accounts.