Considering it wouldn't need to run for-profit, it would cost much less than their market evaluation.
I'm not the guy suggesting nationalising SoMe, and I actually don't think it's a good thing to nationalise that particular function. But shutting down for-profit driven SoMe would probably be a good idea.
Sending a rocket on a ridiculously stupid task with no useful purpose is not even remotely close to having the same negative impact as this has the potential to. It's so far apart that it is honestly quite stupid to even attempt to compare them.