Your right there not the best examples. Not everyone eats fast food, and not everyone drinks the stimulant coffee.
Also Mcdonalds and Starbucks cater to customers in there niche markets.
Spongetech Delivery is looking to fill the needs of several markets. People that enjoy washing there cars, pet lovers, bathing sponges for children, household cleaners, exct.
The bottom line is that that they are looking to have many products for alot of uses.