I think that there's a good case to be made that, when these kinds of companies turn out to be unprofitable, they should be spun into a semi-public service like

I think that there's a good case to be made that, when these kinds of companies turn out to be unprofitable, they should be spun into a semi-public service like USPS (as its own thing, not under any existing institution). Much like mail delivery, there's not much room for innovation on the basic service of, "Provide interface and space to upload music, provide interface to enjoy music." If whoever buys SC has to change it substantially in order to justify the costs of purchasing it + maintaining it + profiting, that would be a massive loss culturally and economically. What is the government for if not to protect foundational cultural and economic entities?