Was Pixar's 'Inside Out' just a fluke?
When Disney's 'Tangled' (2010) was released, it seems like that Disney has found their new "Little Mermaid" as the movies that followed like 'Wreck-It Ralph' (2012) and 'Frozen' (2013) etc. proved that it was no fluke. Those films received similar acclaim from critics and audiences, and they could have easily sucked (despite what some people will tell you).
When you compare Disney's 'Tangled' (2010), 'Wreck-It Ralph' (2012), 'Frozen' (2013) and 'Big Hero 6' (2014) to Pixar's 'Cars 2' (2011), 'Brave' (2012) and 'Monsters University' (2013). It seems that Disney and Pixar have swapped in terms of quality this decade. In fact, it seemed that people were saying something along the lines of "Thank god Disney is back! Pixar has nothing on them!"
However, in the summer of 2015, just as it seemed like Pixar couldn't afford another form of mediocrity, Pete Docter directs 'Inside Out' (2015) which was described by many as a "return to form" for Pixar, and could have been the beginning of Pixar's "Renaissance era". People then said "Whooo! Pixar is back! The old Pixar we once knew!" All that slowly faded away when 'The Good Dinosaur' (2015) was released to a lukewarm reception similar to that of 'Brave' (2012). Also, it under-performed in the box-office, for Pixar standards...
Followed by Disney's 'Zootopia' (2016), which according to Rotten Tomatoes, is one of Disney's highest-rated animated films, and grossing another billion dollars (since 'Frozen'), it up-staged Pixar once again.
While 'Finding Dory' (2016) did receive universal acclaim from critics, and grossed another billion dollars, it seems that the overall after-effect seems to be that the movie was "meh".
Now comes 'Moana', which seems to be getting a better reception, and another success for Disney as opposed to Pixar.
I highly doubt the upcoming 'Cars 3' will be any better, despite people seeming impressed with its teaser. We'll have to wait and see...