Usually these photos are taken FREE by anyone who has a camera, or a nominal amount.
For those really demanding top quality group photo, one has to pay for a decent team of a photographer and assistants with decent gears ....
Timing (if outdoor) is very important as well as the background.
In your case above, i dont think anyone can shoot a "top class" photo because of the sunlight, shadow, shades, and most important the layout (inverted U) .... the background is also CMI la.
usually if company asking for group photo, the cost of shooting group photo will be charge separately, the photographer will set up a few studio lightings, camera mounted on tripod, bring a tall ladder, set up everything nicely, than inform the person in charge summon all the people to come for group photo.
from the photo you show, is more like impromptu arrangement, without any additional photography service charges except prints.
result are not fantastic but acceptable.
I second the comments above. Frankly, i dont think the TS own picture is of any better quality. Anyway, this is not a CnC part and hence i will reserve my comments on it.
I would say that the photographer, has done a proper arrangement of the people, seeing that its such a huge grp. Colors may be a bit off, but like what Canonised and Catchlights has said, provide the budget, i am sure they will bring their profotos down to do a gd pic for you.