A simple thought experiment: what if everyone did like me...?

Say there are 20 tables, and it's open for 12 hours a day. Every customer spends $1.50 and hogs a table for 4 hours. Assuming constant full capacity (a very optimistic assumption), each table has 3 customers a day and brings in $4.50. Which means the shop as a whole brings in a maximum of $90 a day.

In other words: if everyone did like you the coffee shop would be bust in no time.