The biggest bubble in your diagram is Disney. I remember probably around the early 80s, the “Bass Brothers” of Fort Worth, Texas came to their rescue. Disney was threatened with a hostile takeover, and the Bass Brothers stepped in as their white knight. Not sure what their involvement is now, if any. I looked up Robert Bass. Their original fortune was derived from the oil industry, but I see he is now the Chairman of the aerospace company, Aerion Corporation of Nevada.
From Wikipedia:
https://en.wikipedia.org/wiki/Robert_Bass
“...He has three brothers Lee Marshall Bass, Ed Bass and Sid Bass....
Bass’s father founded Bass Brothers Enterprises in 1960 after inheriting $11 million from their great uncle Sid W. Richardson in 1959.[5] In 1985, he founded the Robert M. Bass Group as his person investment company.[3] Additionally, Bass serves as the chairman of Aerion Corporation and president of Keystone, Inc. He founded Oak Hill Capital Partners in 1986.[6]
Taft Broadcasting was purchased by TFBA Limited Partnership, which included Robert M. Bass, in April 1987 for $1.43 billion taking the company private. Bass in March 1988 sold the Plaza Hotel to Donald Trump thanks to their mutual friend Thomas J. Barrack Jr. He led a buy out Bell & Howell in April 1988. In June 1988, Bass made an offer to purchase Macmillan Inc., the publishing and information company, but the company responded with a restructuring.”
I was thinking he might be related to Kyle Bass, another hedge fund manager from Texas, but they do not appear to be connected.