No enforcement agency is required to enforce this law. Rightholders will sue non-filtering platforms over potentional lost sales due to their "wilful negligence

No enforcement agency is required to enforce this law. Rightholders will sue non-filtering platforms over potentional lost sales due to their "wilful negligence". And if the offending platform has any business in Germany (or another country with similar laws) this will be a gold mine for any law business issuing cease and desist letters in the name of competing plattforms.