Having end-to-end control of their topology in production is the measure they're using to make it reliable. Since they're saturating the link the receiver parameters are reasonably robust, the sender physically cannot burst any faster and overrun the receiver.
Retransmit-based systems are probably unusable in this application, even over the short hop the bandwidth-delay product is probably much bigger than the buffer on the sensor. The only case where retransmit would be happen is receiver buffer overflow, which is catastrophic: the retransmit would cause even more overflow.
If you had to fix random packet loss in a system like this you wouldn't want to use retransmission, you'd need to do FEC.
Retransmit-based systems are probably unusable in this application, even over the short hop the bandwidth-delay product is probably much bigger than the buffer on the sensor. The only case where retransmit would be happen is receiver buffer overflow, which is catastrophic: the retransmit would cause even more overflow.
If you had to fix random packet loss in a system like this you wouldn't want to use retransmission, you'd need to do FEC.