Purpose-limited access is the counter-rule that keeps signal obligations from curdling into surveillance. If ownership does not confer signal supremacy, the opposite temptation appears: that any legitimate claim on information opens the whole asset to inspection. It does not.
The ecology receives no more signal access than its standing requires.
Standing grants access to the signal relevant to that standing, and no further. If a private robot malfunctions harmlessly, the state does not acquire unlimited access to household logs. If a company must disclose environmental emissions, that does not justify opening every internal email. If a landowner must disclose groundwater contamination, that does not make their family life public. Disclosure is bounded by its reason. This is the ownership-side expression of the same discipline behind the right to informational quiet and the reversed burden — access is a purpose-shaped claim, not an open-ended one. See Ownership and Signal.