Yup...I imagine a conversation something like this...
Client: What do you mean my price went from $100 per month to $250 per month?
Me: Well...the blower ban goes into effect next month and it used to take 20 minutes to mow, edge, and trim plus 5 minutes to blow. Now it will take 30 minutes to sweep instead of blowing. I promise we will be quiet and won't kick up too much dust though, isn't that worth the extra $1800 a year?