Don't be so cocky. In most of the US, where one or two ISPs rule over the local market, the concept of a decentralized internet is at best a memory (if it ever came to fruition there at all), and across the US the loss of network neutrality is potentially only as far away as the next presidential election.

If you wish to use that analogy, the web borrowed ideas from SGML and project Xanadu and co-opted the best ideas from them, relegating SGML itself and other ideas like it to the dustbin of history.

It is quite possible Bitcoin will be superseded by some other system introduced by one of the existing major transaction processors - they have a huge amount to lose if Bitcoin becomes a standard, and everything to gain by owning the future of transactions.