It made money but reception was never that great. Man of Steel did fine but Batman v Superman was not well received, Suicide Squad was ridiculed and introduced an atrocious Joker. Wonder Woman was pretty good and then the DCEU fell flat on its face with Justice League.
I would't call that moving from strength to strength especially when a lot of that money came from the MCU having created a lot of hype for shared comic universes and DC still benefitting from the Nolan Batman trilogy's success. The DCEU would have fizzled out even sooner had it not been for other people creating a lot of goodwill for comic book movies.
I feel that, aside from Wonder Woman, the DCEU didn't really start working until after Justice League (although I actually thought JL was pretty entertaining despite its flaws). Once all the Snyder mess was past, they just put out a bunch of very individual, mostly standalone movies that weren't trying too hard to build a shared continuity but were free to have their own distinct voices and styles, with the shared universe as merely background texture. Which felt to me like the one shared cinematic universe besides the MCU that was doing it right. Not every film worked for me, but their individuality and loose association meant that one disappointing film didn't affect the others. I also liked that they offered a contrast to the growing interconnectedness of the MCU rather than just trying to copy it like so many other attempted franchises.
Eventually I got tired of that. Now I'm looking for a more balanced approach and a Batman who shaves once a day 
