Earlier quoted context omitted.
Sure, but that would require a significant shift away from our current deduction-based approach. Good luck prying that out of the cold dead hands of boomers (and eventually Gen X)
A large part of it has been. The standard deduction is high enough now that most people can't take advantage of the deduction based approach. Of course most tax people will tell you to save all receipts, they will happily charge you to look through them and calculate that they are not big enough to matter. If people knew how simple their taxes really were most people wouldn't be willing to pay as much for it.
So long as they want / use it, it will 'trickle down' to others.
https://www.taxpolicycenter.org/briefing-book/what-are-itemi....