I’m not dismissing what you like. I just used a very common definition of burger for the question of “how many burgers can you make for $25.”
The food has changed a lot in the last few decades. The McDonald’s quarter pounder used to be advertised as a big burger. That’s just four ounces!
Restaurants may not actually sell you a $25 burger, but the $15 burger is made possible because you get a minuscule amount of the expensive ingredient and they can turn the leftover avocado or bleu into guac or Cesar salad and sell that to you as well.
I can’t recommend moving to multiple smaller patties as opposed to one big one enough though. You get more flavor that way, they cook faster and there’s a very convenient place to put more cheese.