Objectively, yes. It's not corporate welfare for tax prep though. Tax Preparers are like any worker, there's a group of people who say they don't want to do their own taxes and there's a group of people saying 'i'll do that for money' ... simple supply/demand. Of course, these are also the people (especially in small business tax firms, like your local CPA) that help people hide/budget/invest their money, so there's also that service level to consider.
Taxes are just one example of a government sponsored industry that would clearly benefit from automation but I genuinely feel that most people are scared to automate taxes for fear of actually paying them.