Prisons contract with a third party for inmates to have communications with family and attorneys. Courts and corporations are not charging individuals a premium when they are, for instance, in a zoom meeting and no one has to guard them.
When you are in a prison, all use of any communication is monitored, staff is required to move them from the cell, to a room and stay to monitor them and take them back to the cell. They have limited visits and phone call times are all prescheduled from available time slots on a calendar. If there is a staffing shortage or any other problem at the prison, your appointment can be canceled. If you think a third-party collect call phone system is safe, look at the illegally released attorney/client recording that was released in the Murdaugh case.
I already posted the information about visiting at that prison, it's restrictive. It has to be to keep everyone safe while probably being understaffed. Compare it to the free access that attorneys have to clients in federal detention centers. I think it's a matter of priorities and staffing. I don't think the prison is able to accommodate the needs of an attorney/client trying to prepare for a death penalty trial. Again, RA's situation is unusual. MOO