This looks so amazing and I wasn't aware that Playstations are still manufactured in Sony's home country itself. I guess automation helps in keeping the manufacturing cost low. Now I am intrigued about what high selling electronic devices are manufactured in their home country itself and not by the ODMs/CMs in countries with cheap labour like China.
Some are made by Sony EMCS, some by Foxconn and so on. Whether the PlayStation company let's them manufacture by one of Sony's own OEMs or a third party company is usually a matter of which OEM has the best offer.
Sony normally uses their own OEMs for the first batches, for low-volume products and for domestic products.