It would be good a cyber cafe business, where you could also add a new mechanism that is the cost of electricity, where apart from having to invest in the computer equipment would be to pay the consumption of electricity generated by these (apart from the other businesses that would also have consumption but to a lesser extent). You could have two types of pc’s, the low-mid gamma with a cost of 10 dollars an hour and the high gamma 15 dollars an hour. We could also generate profits from the sale of food and beverages. New foods could be added such as snacks and food:
*Nachos with cheese
Another mechanism (as mentioned in comments on another post) to provide maintenance to refrigerators and in this case the pc, hiring new type of employee that would provide this depending on the district that is assigned through a headquarters. Also that this type of business would be more in demand for example in Garment District and Hell’s Kitchen where there is more lower-middle class.