How do you put a price tag on a legacy like id Software's?

In 1984, an upstart retail company called Costco had just opened its first handful of voluminous warehouse stores on the west coast of the United States when it decided to try an experiment. It installed a hot dog cart in front of its San Diego store and started selling Hebrew Nationals with a drink for $1.50. People, it turned out, liked the hot dogs. The cart became Cafe 150, named for the combo price.

The company sold 245 million of them last year. When the CEO of the company in the 2010s complained to founder Jim Sinegal "we can't sell this hot dog for a buck fifty. We are losing our rear ends," Sinegal, likely then in his 70s, famously shot back: "If you raise the effing hot dog, I will kill you. Figure it out." A Costco hot dog and a 20 oz soda still costs $1.50.

In 1992, just a year-and-a-half after releasing a cutesy 2D platformer called Commander Keen, a tiny squad of game developers barely out of their teens started a studio called id Software and pioneered the first-person shooter. Then they followed it with Doom, maybe the most important computer game of all time. It was installed on more PCs than Windows. That tiny squad hired more people and then made Quake, maybe the most important 3D computer game of all time.