Not the same thing. The copyleft hack on copyright is enforced by copyright holders, thus property (or whatever word wishes to use if not "property") based. Other easily imagined mechanisms for forcing transparency/source revelation would have no relation to copyright nor any other kind of property; I wouldn't call them copyleft any more than I'd call forced transparency in other domains (e.g., finance) copyleft.

Such would still be "using legal controls" (or more broadly "using policy controls", as in the case of procurement, which could be private) but not necessarily to "enforce rights management of bits and bytes". The legal controls could be for example around certification of a product: no source, no certification, no legally selling product. In that case the bits and bytes independent of a product on the market would be unregulated, not subject to forced transparency.