The adoption of blockchain technology is a work in progress. There are details that have to be worked out; a fully secure and decentralized system needs to be built; scalability and performance must be optimized. Yet there is one major tension that must be resolved first: there needs to be a strong consensus mechanism.
You are hitting the main bottleneck of blockchain i.e. integrating scalabilty, security and decentralization in one place. So far there is always a tradeoff b/w these three features. Bringing all these at one single table will be like a revolution.
Yes, you know what you are saying, there is truth in your words, but still, first you need to check everything, test it, study it to the smallest detail, even then speak significance.