Hello friend, I think you are not wrong to say that we are entering a new era, since the introduction of bitcoin there have been many changes and important advances thanks to blockchain, I could not imagine what would happen in about 5 years time.

I think that people would use the social network that best suits them, all have different features (In many cases you can not do the same thing on facebook as in instagram or steemit), so everything depends on tastes and flavors hahahaha.