Blame Carlos Ghosn. He basically took everything Nissan would've liked to use and spent it on Renault instead. The Leaf was supposed to be the first of three electric cars for Nissan and Infiniti starting in 2010, but Ghosn cut that off in favour of pumping the Rogue and Murano instead because they were solid earners that could funnel money back to Renault during the recession. And he just never changed that afterwards. Nissan's board of directors even had several revolts over this between 2012 and 2018, one of which got the French government involved.