This is basically the market TurboTax and H&R Block are going after. Each taxpayer's circumstances will be different, so it would be impossible to hire a single

This is basically the market TurboTax and H&R Block are going after. Each taxpayer's circumstances will be different, so it would be impossible to hire a single company to perform blanket tax-dodging maneuvers for an entire class of taxpayers, and if they did it individually, the payoff wouldn't be large enough unless they charged an amount that would be too high for lower income tax payers to justify or afford. However by taking the complex tax code and distilling it into a series of user-friendly questions, TurboTax is able to scale up to a mass-market offering that is feasible because the time spent by the filer is inexpensive enough to justify. The market in between is the market local accountants typically fill.