Yes, but if a company publishes its trade secrets on the web you are entitled to read them and use them.

Only if you're going to use them to train an LLM!

Also, more seriously, there are plenty of pieces of information that are compelled to be published that don't lose their confidentiality. There actually is a general concept that confidentiality can be lost if you are negligent in its protection but it's a very nuanced thing.