Big Mac’s are nasty in my opinion, I know a lot of folks like em, and every chain with a burger on the menu offers a version of it just about... so I know they are popular... but I ever ever cared for em... I’m a GenX though.
Personally, the biggest issue I have with the top 2 burger joints is simply their burgers are pathetic... McD’s dropped to 1/10 lbs burger sometime in the 80s I think... and BK dropped to it in 2000’s I think... at this point what is the point of ordering their burgers? They are literally sliders...
Need to step back up to 1/8 lb burgers even if it means a price increase to do it.... and if I ran McD’s, I’d have gone back to formula 47 in their friers long long ago. McD’s would see its revenues increase overnight if they just did that one change... just like they saw their sales increase when they returned to using REAL BUTTER in their breakfast items... never announced or marketed it, but sure enough, as soon as they did they saw their sales increase.
Formula 47 would return McD fries to one of the must have sinful items they were through most of McD’s history.. instead of the joke they are today.
I worked at McD's in '82-'83 and they were definitely 10:1 burgers at that time (10 burgers per pound), and there was no hint that the burger size had ever changed. I searched and couldn't find any record of a change, but the best answer seems to be the packaging that held it together and prevented it from compressing was dropped. All the long-time employees/mangers who posted said it's always been 2 x 1/10 lb burgers (at least back to 1970).