In any lucrative business, someone would think about, the location, and capital. That plays a major role for one success in business.
In my own environment, a consider having a male and female boutique because that's in high demand in my place. People can't stay totally without putting on wears. Someone must put on clothes to cover their nakedness.
Clothes, pharmacy and selling of foodstuffs are major business that it demands can't be less because humans needs it as a must in their lives
You make a great point. Besades, people can't go without food, since we burn energy constantly, we need to replenish our energy through food. That's why fast food and any food products will stand out everywhere.
Most people don't have time or don't know how to cook at home, due to responsibilities such as work, studies, taking care of children, etc. So the only viable alternative would be to eat out or order delivery.
If I were to have a business, I would prefer to have one that is online, like an online store (e-commerce), selling products on a marketplace, especially focused on the electronics niche, PC accessories, mobile phones, etc.