alt Hacker NewsMcDonalds was that and more first. They established the template that In-N-Out continues to follow, as anyone older than ~30 remembers.
McDonalds chose to aggressively enshittify, In-N-Out did not. You're probably right that McDonalds will never be that again, I don't think they even want to. If you cut minimum wage in half today, they'd keep the same staffing levels and the franchise owners would pocket the difference.
We agree mostly. I'm sure they would never "give back" the labor spend they've already 'learned to live without.' Though if you cut minimum wage, it'd suddenly become possible for a new entrant to open a restaurant that would embarrass them, by having twice the staff while holding other things similar. Today that's impossible to do without losing a ton of money, so the current businesses are protected from competition (other than from those "cult" type of place like In-N-N-Out. But how much more business can McDonald's really lose to In-N-Out, since they're basically running at capacity).