In conclusion, Black Ops 1 and 2 are not available on the PS4 because they were developed for previous-generation consoles, game developers prioritize creating new titles for current-generation consoles, and backward compatibility is not guaranteed across console generations.
Call of Duty: Black Ops II is a 2012 first-person shooter video game developed by Treyarch and published by Activision. It was released for Microsoft Windows, PlayStation 3, and Xbox 360 on November 12, 2012, and for the Wii U on November 18 in North America and November 30 in PAL regions.
