The only reason that billions are being spent today is that in 2022, the Inflation Reduction Act (IRA), granted $80 billion mandatory spending boost for the next 10 years in order to modernize tech for the first time in 60 years.
The goal was that if they could identify people who were underpaying on taxes, they'd be able to recoup that benefit, and at the same time reduce inflation. This is a strategy that China has taken, and is currently using to great effect by identifying off-shore tax shelters and shadow companies that benefit the ultra-rich then taxing them as they always should have been.
As for the US, all seemed to be going well until Doge stepped in and began to claw back funding, so the IRS was forced to change its initiatives to fit the current administrations theme.
I doubt we'll be seeing any tax shelters unveiled soon.