Re: 8 years of no Batman or Bruce Wayne, and NO ONE could pick up the trend?
Yes. I read the clean energy project as Bruce's attempt to move on after Batman became obsolete. It let Bruce channel his energies into helping the city, rather than wasting his time in the cape and cowl and lingering on what's past.
"I defeated your uncle Victarion and his Iron Fleet off Fair Isle, the first time your father crowned himself. I held Storm's End against the power of the Reach for a year, and took Dragonstone from the Targaryens. I smashed Mance Rayder at the Wall, though he had twenty times my numbers. Tell me, turncloak, what battles has the Bastard of Bolton ever won that I should fear him?" - Stannis Baratheon