Yes, you can be locked out of the internet or large segments of it. 
This is why it is so important to build sovereign decentralized infrastructure.  
Elon Musk can have his own internet with Starlink, but why? Because he can afford launching satellites into orbit. Can you?

#DecentralizeSpaceExploration 
#FieldPropulsion 
#GravityControl 
#AlternativePropulsion  

 Mesh? 

 Yes, it could be, but you also need physical infrastructure. 
We must have the ability to launch satellites to low orbit. 
Rockets are too expensive, dangerous and complicated. We need something better.