Wall Street Journal is making the same mistake folks in this thread are making and the same mistake Forbes makes...and its crazy cuz they should all know better: If the majority of Dre's net worth is invested in Beats, then you don't get to add that amount on after he sells Beats, you only get to add the difference between what it was worth before the sale, and what you pocketed after the sale.
Like Forbes will regularly do shyt like this:
2008: Jay Z is worth 300 million from his stake in Rocawear (I'm ignoring all his other businesses for this example)
2009: Jay Z sold his stake in Rocawear for 350 million, now he is worth 650 million.
NOPE. Thats not how it works, Jay would still only be worth 350 million becuz once you sell the asset you no longer own it (should be obvious) his original 2008 net worth was estimated based already on what the value of Rocawear would be if he sold it. You can't count your money twice...
Thats that funny math they do. Congrats to Dre tho...