@JPB,
No a new cable carrying un-encrypted traffic would not be all that useful,
No the best solution is to have the whole internet go dark by way of encryption everywhere IE no more http only https traffic.
An of course trust no firm working under US laws and move everything possible off their servers.
Oh yes get off any OS that is not open source such as Microsoft windows with once more special attention to US companies.
You could bury any kind of spyware into the OS of Microsoft.