They weren't designed for it. I'm in the UK and there's reporting systems for- employers, pension schemes, savings accounts, charities and student loans- all t

They weren't designed for it. I'm in the UK and there's reporting systems for- employers, pension schemes, savings accounts, charities and student loans- all to avoid most people having to fill in a tax return. Something like deducting sales tax would never be passed as a law because it wouldn't be accessible to most people. As an analogy, we can say that laundry will never be automated because the washing machine can't separate whites from colours, doesn't apply stain remover, doesn't remove the delicates when it transfers to the dryer, etc. All technically correct, but people stopped caring. People have a financial and emotional attachment to their tax loopholes though.