Perhaps you should look at your post again and admit your mistake.
For instance- In the picture below, you can see one of the boom trucks parked in the loading dock area. If you examine the truck bed, you can see it is loaded with drywall plus drywall dollies (used to handle it on a job site).
Perhaps you should look at the other truck carrying additional of the building materials they are delivering, such as drywall. So now we have them shipping drywall and PVC pipe to job sites. Looks like they are moving even more material out the door.
But you didn't post that picture with your claim, Hockmir. A terrible forensic error. And it looks to me like that truck is just sitting there, not "moving even more material out the door". I'm done posting responses to your boring obfuscatory statements.