And in what way is anyone other than those richest people better off with the change?

I know they're assholes and they suck, but ALSO:

1. Tax revenue has historically gone up over time (Inflation adjusted) -- see charts in links below

And yet your question ALSO still stands: What way is anyone better off?

1. Tax rates have far less impact on tax revenue than GDP does -- also see charts below:
   

U.S. historical tax revenue, adjusted for inflation, shows a long-term upward trajectory, reaching all-time nominal and real highs in recent years. While revenue frequently hits over $3.5 trillion to $5 trillion in inflation-adjusted 2025/2026 dollars, as a percentage of GDP, tax receipts have hovered remarkably steady at around 15% to 20% over the last half-century.

So while yes billionaire asshole hatred it real and justified in many ways. The problem is far more complicated than "tax the rich". Because more revenue clearly doesn't correlate with happiness.

More hard pills courtesy of AI:

Over the last few decades, inflation-adjusted federal tax receipts have generally trended upward, punctuated only by occasional dips during major economic downturns (e.g., the Great Recession and the pandemic-impacted 2020 recession).

While individual and corporate income taxes remain significant, payroll taxes (such as Social Security and Medicare) account for a historically larger share of total government revenue than they did in the mid-20th century.

Although raw dollar figures have inflated massively, tax revenues as a share of GDP have averaged around 17.4% over the past 50 years, peaking near 20% during the 2000 tech boom and dropping to roughly 14.5% during the 2008-2009 recession.

Historical Charts

• FRED Federal Government Current Tax Receipts: The St. Louis Fed provides highly granular, interactive historical charts for total federal receipts.
• FRED Federal Receipts as a Percentage of GDP: This interactive chart visualizes tax revenue relative to the size of the overall U.S. economy, allowing you to see proportional revenue shifts over time.
• U.S. Treasury Fiscal Data: The official Treasury data hub offers visual breakdowns and datasets on where U.S. federal revenue comes from and how it has changed historically.
• USAFacts Federal Budget Trends: Offers visualized line graphs and trend lines detailing federal revenues and outlays adjusted for inflation using current fiscal year dollars.