That's what I was thinking.
I mean, it isn't like someone called saying "I have a 85" TV, I demand it be installed today or I'm calling someone else"

I guess it's also possible the company Fins works for now, only places an order for accessories every 3 months (per quarter). Buy large bulk and save $$$. But risk not always having what you need.
But then couldn't they offer a later date on install, with a mount that was 'special ordered' and mark it up appropriately? I'm not aware of any shortages on mounts that happened last year.

I don't know. I'm having a hard time following the logic. Customer wants TV wall mounted, order the proper mount, schedule the install, and get paid... What am I missing? (other than the same day customer type).