This, however, was a major supermarket chain that's been going for nearly 100 years. They decided to make delivery cheaper AND reduce minimum spend per delivery by half. There must have been something they made more expensive somewhere to compensate or maybe they were pushed to do this by the market, I am not sure.
> There must have been something they made more expensive somewhere to compensate
Milk and eggs? Probably they saw a dip in spending because people can't afford extras. Cheaper delivery can get people to add-spend "cause I'm already paying for delivery, should make it worth it".
>Company starts
>Makes things better to get a larger market share
>Gets a mini-monopoly (large enough share that inertia and name recognition can preserve its market share)
>Slowly but deliberately gets worse to increase profit margins