There may have been better uses of $4 Billion in 2012 and only Disney accountants track the full value, but there is enough to say it wasn't a bad investment.
Star Wars: Episode VII - The Force Awakens (2015) Cumulative Worldwide Gross: $2,068,223,624
Star Wars: The Last Jedi (2017) - Cumulative Worldwide Gross: $1,332,539,889, 19 April 2018
Rogue One: A Star Wars Story (2016) Cumulative Worldwide Gross: $1,056,057,273
Solo: A Star Wars Story (2018) $392,074,197, 16 August 2018
There are hundreds of millions of dollars in production costs and marketing costs, but also merchandising revenue streams and licensing fees collections. There were TV spinoff shows produced also.
DVD, Bluray, Digital sales
Star Wars: Galaxy's Edge
LucasArts video games
Industry analysts believe Disney is a little bit ahead now, and the future is the real profit.