@thermophilus @_elena sustainable doesn't mean "for profit". And all public services are not commercial activities, they have to effectively... provide a service, not make money from that.
Even the so-called efficiency is secondary. It is evident that money can be found if politics wants.
Social networks are a direct news channel, with citizen feedback, and a public square for discussion, and possibly education and information. They can also weaponized. An open decentralized tool is needed.