Pardon my ignorance, but is a technology like this anything more than research? Ie, lets pretend there is a market for this (ie, that people actually cared abou

Pardon my ignorance, but is a technology like this anything more than research? Ie, lets pretend there is a market for this (ie, that people actually cared about security), could this be used? I ask because the 2M (concurrent?) users would be a very small limit in a hypothetical whatsapp/telegram/etc replacement. So my question is not a critique, but an honest question. I imagine either this is purely research, or that 2M limitation is intended to be setup for communities, where you'll have many 2M instances running. Though, many 2M instances running seems prone to isolating one group of individuals. Thoughts?