I know there are some projects toward that already, but my fear is they won't reach maturity before governments blocking any content they don't want their population accessing is the norm.
Some things should be illegal, sure, but if governments start attacking free speech and limiting what materials a population should have access to when they have no reason to do so, then an alternate network where crime is rampant that they can't police is a necessary price to pay to get around unjust authoritarianism.