They turned out 3 movies a year because they basically had two animation studios at the same time. The PDI unit closed after the Penguins movie bombed.
As a side note, the Penguins of Madagascar movie and Minions both had short turnarounds because they were spinoffs, and could be written without thinking of the main series.
According to Box Office Mojo:
Friday11
NEW IN THEATERS
DISTRIBUTOR
RELEASE
Almost Christmas Comedy
Universal
2,200+
Arrival Sci-Fi
Paramount
2,200
Shut In Thriller
EuropaCorp
1,850
Doesn't look like intense competition to me. Doctor Strange is probably going to win this weekend.
I was talking about Calendar Gross:
CALENDAR GROSSES
INDEX BY MONTH | INDEX BY YEAR | MONTH-TO-DATE Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - November - Dec
Year
Total Gross
Change
Movies
Avg.
#1 Movie
Gross
% of
Total
2012
$1,090.6
+26.7%
236
$4.6
Breaking Dawn Part 2
$242.7
22.3%
2013
$1,071.2
-1.8%
237
$4.5
Catching Fire
$282.1
26.3%
2009
$994.7
+10.8%
224
$4.4
New Moon
$233.3
23.5%
2014
$966.4
-9.8%
230
$4.2
Mockingjay Part 1
$225.7
23.4%
2002
$928.1
+14.9%
234
$4.0
Harry Potter / Chamber of Secrets
$193.4
20.8%
2003
$904.4
-2.5%
227
$4.0
The Matrix Revolutions
$133.3
14.7%
2008
$897.4
+19.8%
225
$4.0
Madagascar: Escape 2 Africa
$159.1
17.7%
Early buzz on Moana is that it's not as great as Zootopia, going by the tweets posted on this thread:
http://forums.boxofficetheory.com/topic/10372-moana-112316-teaser-trailer-on-page-33/?do=findComment&comment=2726594
Zootopia is now the obvious frontrunner. Shame that I haven't seen Kubo, so I don't quite know how the competition stacks up. It's been quiet from Sony about The Red Turtle as well.
I don't know why you're saying "probably" $500m worldwide. Home and Penguins of Madagascar failed to make over $300m outside the USA+Canada, so I don't see how Trolls will do much better.