A low tech method with no taxation would be for people to keep goats and sheep as pets. You get both vegetation control and milk/wool if you choose to “harvest”. Their manure is better organic fertilizer than dog nuisance. No bites and barking too! In Portland, Oregon, the city uses this technique for vegetation control of hill sides to prevent fires. They call a farmer who throws up a temporary fence and the shrubbery is gone in a few days. The animals can trim pretty steep hillsides where no human or machine can reach.