It's not possible to stop a peer to peer network that is using modern technology. Governments and industries have been trying to stop or even delay torrenting of music and things like that to no avail, and so the music industry now has largely changed into a streaming service and concert service because of it. So Bitcoin will force change once it becomes disruptive enough, we just need some more user interface changes to make it as easy to spend as swiping a card.
The governments have not been trying to shut down torrenting actively.
If that would have happened they would have all have gone after the torrent sites and in a matter of months they would have shut them all down.And without a place to get your .torrent file in order to download something the p2p protocol is useless.
It's Netflix that has killed torrenting in North America, and that is a scary perspective....
If you're referring to the bitcoin blockchain, yes, it's possible for it to be stopped if a global crackdown on miners takes place and seize all the mining equipment, further preventing the addition of new blocks on the chain. Given the 'decentralized' nature of bitcoin, and its miners being situated into different parts of the world, it would be hard to search all of these and seize it all, so that one possibility is ruled out. Another event that could possibly stop bitcoin's blockchain is a nuclear warfare wherein a huge percentage of the world is completely disintegrated and the remaining are left dying in nuclear waste. We are very far from that happening but it still is a possibility you cannot rule out to happen in the distant future, otherwise the process of adding blocks in the chain is ad infinitum.
It doesn't have to be a forced shutdown, that will never happen as there will be always some part of the world that will keep going on mining or at least some guys in a basement in Siberia.
Its end will come the same way other p2p technologies end up, users leaving them for something else, but I doubt we will see this in our lifetime (at least mine).