People seem to miss this. Eventually people will supplement different niche activities on a monolith for something else, and then suddenly they don't need the main thing that much anymore.
A gourmet supermarket just opened near where I live, between that, the local fruit shop and local butcher (with the odd trip to an asian supermarket to top up on that type of thing), my visits to the supermarket (which is also close to me) are probably down to a 3rd of what they once were. Without me realising it or doing anything conscious to reduce my patronage, the amount of money I give the supermarket has drastically plummeted through small, cumulative changes in behaviour.
A gourmet supermarket just opened near where I live, between that, the local fruit shop and local butcher (with the odd trip to an asian supermarket to top up on that type of thing), my visits to the supermarket (which is also close to me) are probably down to a 3rd of what they once were. Without me realising it or doing anything conscious to reduce my patronage, the amount of money I give the supermarket has drastically plummeted through small, cumulative changes in behaviour.