dropcrm for drupal 7 has been released.
The mission of the DropCRM project is to support various projects in the Drupal Community which will provide the building blocks necessary to create a CRM system with Drupal 7, and to package those tools together in one or more distributions pre-configured for specific use cases. Closely related projects include Profile 2, Drupal Commerce, and Features module.
Not everyone needs a client relationship management system or they may not need it yet although would like to have it in the future. Drupal is ideal for pragmatic enhancements where features can be added as needed.