yes, remember ZZ NA and PP treat any DVD sales as found money, much like the DVD companies used to treat VOD sales.

NA shoots roughly 35-40 scenes per month
ZZ shoots roughly 60-70 scenes per month (Babes included not including DP)
PP shoots roughly 55-60 scenes per month (they quietly have amassed quite a collection of sites - puremature, passionhd, castingcouchx, pornpros, tiny4k, exotic4k, fantasyhd, herveryfirsttime, and I might be missing one or two.

Those 3 companies are shooting a scene a day and mostly 2 scenes a day.

Wicked shoots 2-3 movies a month at most (10-15 scenes)
New Sensations probably shooting 20 scenes a month at most
Evil Angel is a collection of directors who shoot 1-3 movies a month (5-15 scenes)
Zero Tolerance might shoot 30 scenes a month, but don't quote me on that.

I guess I skipped Kink - I would assume they are shooting 60-90 scenes a month but some are gay of course.

So when I say largest, I guess I mean hiring the most girls, shooting the most scenes, and making the most money in gross not net.