Chipping tends to get treated as an implied, automatic part of any tree job, but that assumption is exactly where gaps show up, some companies chip and haul everything, others leave brush piles behind as the homeowner's problem to deal with, and the difference usually isn't clear until the crew has already left. A brush pile sitting on a property isn't just visually unfinished either, it's a genuine fire risk during dry stretches and a habitat for pests that would otherwise have no reason to be drawn to that part of the yard. The volume of debris also isn't constant throughout the year, seasonal storms in particular can generate a significant amount of brush and branch material all at once, well beyond what a typical pruning job produces, and that volume needs a real plan rather than an assumption that it'll get handled eventually. There's also a version of this service that has nothing to do with a company's own tree work at all, a homeowner dealing with an existing pile from a storm, a DIY pruning attempt, or a job done by someone else entirely still needs somewhere to turn, and chipping works just as well as a standalone service in that situation. None of this is complicated, but it does require actually finishing the job rather than treating debris removal as someone else's problem once the cutting is done.