Translate the following English sentence to French:
"All that remains is to make their funding transparent, not so much to conform to rules on competition as to enable public service to really diversify its activities and enrich its services."
Il reste à donner une transparence à son financement, et ce non tant pour se conformer à des règles de concurrence que pour permettre au service public de diversifier ses activités réellement, d'étoffer ses prestations.