Due to the rapid progression of fantastically powerful computer networks, this point of no return, the technological singularity, now appears more accurate and imminent than ever. The bitcoin network, for example, has demonstrated exponential growth in total hashrate since it first came online in 2009.
The computer network are not as advanced as you assume they are,almost every network can be compromised as they all have some downfalls even an optimized network will have some limiting factors as it cannot be generalized to all scenarios.
Bitcoin networks are challenging to violate because with the Blockchain platform there are many advantages and it is difficult to find vulnerabilities to penetrate. Computer networks are increasingly expanding because of the increase in the number of users, increasing the platform of Bitcoin. I believe it will soon change the whole economic structure of the world.