Riffing off this paper, but not dependent on it:

https://www.nature.com/articles/s41586-023-06980-y

https://www.techspot.com/news/101974-dvd-like-optical-disc-could-store-16-petabits.html

Researchers at the University of Shanghai for Science and Technology have developed an optical disc with a capacity of over a petabit of data, equivalent to well over 100 terabytes. Although the technology is primarily proposed for enterprise use, it could potentially become accessible to consumers after overcoming significant obstacles.

Market will resolve on evidence of commercially available product (not necessarily consumer), or Jan 2031.