When I worked at TacoSmell in the 80's we washed soaked boiled and hand blended the beans. The meat arrived refrigerated in a block and we added spices and mixed while cooking in a vat. That was in the days of 20 taco packs. We were good. A lot of customers had some great dinners.
Now, I'm under belief everything arrives packaged in boil bags because employees are not trustworthy enough to do their simple jobs. When I sit there in a fast food line for ten minutes, pay $10 for a simple meal, no ketchup even, get an attitude, order is cold and wrong, I think back to earlier days. I hesitate to even stop anymore these days. Much of this originates from higher up I suspect. No QC.
Japan has had burger vending machines for a while
https://www.trendhunter.com/trends/vending-machine-burgers#:~:text=There%20are%20vending%20machines%2 0for%20books%2C%20jeans%2C%20and,its%20patrons%20o rder%20burgers%20through%20a%20vending%20machine,
But nothing replaces fresh.