Even if they agreed to the associated costs those dust reducing products mentioned would cause you an entirely different set of problems when it comes to detailing. Calcium chloride...rust...beet/corn/pine tar/sap bi-products, etc., all seem to find there way onto and into indoor flooring surfaces of the home from walking on treated gravel, not to mention the tires kicking that crap up and onto the paint surfaces of the vehicles. Like I said, useless information as it pertains to dust related detailing issues. Try going to a camp ground where some old bitty with OCD so bad you could eat off of her floors in her camper or mobile home and ask her if she'd rather contend with the dirt and dust from the gravel on her flooring or that crap they sprayed on the gravel to keep the dust down. IF she's lucky at least they didn't chip seal the gravel with actual tar and more gravel. In our fish camp alone we have 6 neighbors, not counting my mother and myself, who are PO'd about them spraying dust inhibitors on our gravel roads just because a few people want to drive faster so they don't kick up dust.
If you're not the type to worry about keeping anything clean and your only worried about dust from the roads getting stirred up, then knock yourself out and by all means coat your gravel road. Just stay the heck off of my road. LOL! In fact, if your the type that doesn't keep anything super clean you should worry about any little bit of dust. I know that sounds strange when you're concerned about your car being cleaned and live on a gravel road or lane, but trust me...those dust inhibitors won't fly either...unless you want to take a two week vacation or longer. By then most of the sticky stuff should be nice and stuck to the gravel and won't much get on your paint...that is until it rains the first 3-4 times and you have puddles of that crap everywhere. Joy, joy! Before dealing with the joys of side issues from coating your gravel you have the pleasure of trying to herd the cats too. LOL!!!
By now you should clearly know that I'd rather contend with the dust than coat my gravel with some icky...sticky...or rust causing substance. LOL!