I know all of that. Still, I can't make the overall numbers for Germany work out in a way that gets to a customer base of any scale for plumbers.
250 work days in a year assuming no weekends and no other vacation (because it makes a round number). 2000 work days in 8 years. You can't see how a plumber might see more than 0.5 customers per day?
250 work days in a year assuming no weekends and no other vacation (because it makes a round number). 2000 work days in 8 years. You can't see how a plumber might see more than 0.5 customers per day?