Datagrid2 is not intended for having an Listview in its columns, so I would advise against that. Alternatively you can (or should) use a Gallery, and include a Listview in there. This will get you the view you want.
And just doublechecking: you do have read-write-access rights on association Address_Company.
Two tips, hope they get you closer to the solution:
Can I proceed this way: Create a 'Company Overview' page and a 'Company Edit' page but select the 'Address' entity as the data source? What are the potential risks of this approach?