No, license fees pay those salaries
Where I live license fees do pay for part of the expenses,but tax dollars make up the difference,which is considerable.The Fish&Wildlife department needs buildings,vehicles,equipment,office supplies etc.as well as paying the C.O.s and biologists salaries,and license fees just aren't enough to cover it all.
Many roads are federally funded.
And many roads are built or maintained by the state/province or local municipality.
They only support the local economy out of necessity, that doesn't really make sense?
Necessity or otherwise,they do support the local economy all year round,and that is what keeps the local businesses open.
Traveling sportsmans BOOST an economy from what it would be if only the locals were there.
Non Resident hunters do supplement the local economy for a few months each year,but they aren't the people that allow the local businesses to be able to operate year round.