I understood now.
Taking into account a quant of users and pages, we can not effectively realize this model with User Role Editor Pro “Content View Restrictions” add-on.

In theory, you can create 200 roles, assign them to 200 users. Setup view restrictions for every page. Then assign the unique role to every page menu item with “Nav menu roles” plugin. But it’s so large routine manual work, that a special custom decision may be a quicker and easier way for some developer.

If this is the only reason, for which you bought User Role Editor Pro, just ask for refund.