The PSVR2 was released on February 22. - 5 Weeks on sale.
270,000 x $549.99 = $148,497,300
If they can sell around the same number (if) each month for 12 months that's around - 3,240,000 = $1,781,967,600
You also have to take into account PS5's sold are around or over 32-34 Million right now and as more people get them there is a higher chance of them also getting PSVR2.
The first Playstation VR was launched in the fall of 2016, and by the end of 2019, more than five million units had been sold in just over three years.
So its not all doom and gloom it took PSVR1 three years to get to 5 million.
But nice clickbait title anyways.