I agree with some things you say cozy,but lets not forget that residential Wc is only based on a gentlemans agreement,no contracts or anything.
When you buy a round,yeah i agree with wanting to protect that investment,but does it really matter if an up and coming WC has 4 houses in a street where you have 20?? and is it worth threatening him etc??
Aslong as you do a good job,on time every time then other competition shouldnt need to faze you.
Round here theres a couple of chancers going round trying to undercut alot of us theyre swearing on doorsteps infront of customers saying"well f*** em off,were £2 cheaper etc"
Our customers should know better to even entertain the thought of gutter snakes like that doing their windows.
I trust mine to,and if they dont and you lose a couple then theyre better off with the muppets who will do it once,get stoned off the money then never return!!