It's not saying that at all (nationalising companies is a very specific action that doesn't have anything to do with what you described).
That said, I don't agree with your premise which appears to be that this is bad. Converting something that is basically a utility already (i.e. everyone uses it and everyone expects to be able to. It's almost unthinkable to have daily life without it) to a nationalised company would be a good thing.
For the record, I'm actually quite in favor of not leaving necessary infrastructure in the hands of private companies. Although I don't think social media sites are necessary infrastructure personally.
It's not saying that at all (nationalising companies is a very specific action that doesn't have anything to do with what you described).
That said, I don't agree with your premise which appears to be that this is bad. Converting something that is basically a utility already (i.e. everyone uses it and everyone expects to be able to. It's almost unthinkable to have daily life without it) to a nationalised company would be a good thing.