The owner was not deprived of the trade secrets. The owner still has all the information. It's just not secret anymore.
Its not that simple. The legal and property protections offered by a trade secret, a legally recognized type of intellectual property, is lost. The owner deprived of its benefits.
Let's say I buy a Ford F series truck. It's "America's best selling car". Now lets say a Toyota model gains the title. Was an "America's best selling car" stolen from me?
That is a title not a trade secret. Again a trade secret is a legally defined type of intellectual property that offers the owner specific legal rights and privileges. For example something in the process that Ford uses to manufacture those trucks. A Ford employee could not take that process to Toyota.