[modeless]

I understand that they are less convenient and probably significantly more expensive for commercial use. That's why legislation is necessary, so landscapers who choose them aren't at a cost disadvantage. Externalities like air pollution are the textbook reason for regulations like this.

[SOLAR_FIELDS]

I mean we are talking an order of magnitude more effort and cost in exchange for noise pollution. I suspice if you told voters lawn care would quadruple in price in exchange for less (note, not eliminated) noise and air pollution that voters would not be terribly keen to approve such a solution.

[modeless]

> lawn care would quadruple in price

Come on, they're expensive but not that expensive.