If information is your competitive advantage maybe you shouldn't have it on a publicly accessible website, and should instead stick it behind an API with pay tiers and a very clear license regarding what you may do with it as an end user.
Note, a simple sign up being required to view a website makes it not publicly available information any longer and you can cover usage, again, in a license.
Then you have a whole bunch of legal avenues you can use to protect your work. Assuming you can afford it that is.
Seriously? Do I need to explain why a song doesn’t enter the public domain when it is played on the radio?