The parties you mention aren't even necessarily pirates. But it's true they're putting a lot of pressure on the ISPs these networks rely on. They're essentially taking down the indexes / directories so people can no longer propagate pirated material.
You might consider the following though:
- Torrents are now completely decentralised
- Some of the oldest P2P network are decentralised
- Of those old networks, some are still alive today despite being 'decapitated'
- Indexing is a relatively new phenomenon in terms of P2P networks
- There is nothing preventing inception of more decentralised networks
All of that basically suggests that file sharing isn't going away any time soon. No doubt counteracting measures will come into play (3 strikes etc), but the efficacy of such measures really depends on how vulnerable the networks are; something that is likely to change along with perceived threats.
Frankly I can't picture any real fruition until cheap, legal, on demand replacements proliferate in the market.