“The potential investor upside of a Google breakup — if John Rockefeller is any guide”

“… John Rockefeller’s Standard Oil more than a century ago. The empire that controlled nearly all US oil production during America’s industrial revolution had to split into 34 smaller companies after the Supreme Court in 1911 sided with the Justice Department in an antitrust challenge… The companies became giants such as Chevron (CVX) and Exxon Mobil (XOM) that still rule the industry today…”

https://finance.yahoo.com/news/the-potential-investor-upside-of-a-google-breakup–if-john-rockefeller-is-any-guide-133059958.html

Thats 2 out of 34. Where there any losers out of those companies? Feels like we’re only getting half of the story.