This misses the point much like saying people should use Linux because it's open source. Open source is great, but at the end of the day, people will use software that they're both capable of using and that solves their problems. If you don't tick both of those boxes, the rest of it doesn't matter. Social media is the same, owning your data is nice, but if the barrier to both entry and maintenance is too high for a regular user, it's not going to happen.