No mechanical steering advantages

• Why move the whole satellite and risk mechanical failure if you can steer the phased array into required direction?
• Lower power consumption.
• It is crucial to be power efficient when out in space - antenna arrays can switch power modes and save some energy.
• Lower cost: Arrays can be built on PCBs, which cost less.
• Wider coverage with beam steering.
• Phased arrays can steer beams as they move, directing capacity where the users are located.