Imagine I inherited a million (after inheritance tax) in say 1980, and wisely put the entirety into Berkshire Hathaway A at that time at $305 per share.
It closed to day at almost $640,000 per share. So, I started with a meager 3,300 shares (rounding). I still have 3,300 shares, but their value is, well, a lot more, 2,100 times more. So, I'm a billionaire, twice over. How much tax did I pay on that? Zero. Nada. No dividends. No income. Just a massive increase in wealth.
If I did the math right.