Lets make a very conservative assumption, that only 10% of IT and financial services will be improved with the help of blockchain technology and will depend on blockchain in the future. That gives us $3.1 trillion in utility value, which blockchain technology can provide. Once again, this is a very conservative estimate.

Hilarious...
You know, since this whole world runs on electricity is somewhat of a mystery that electric companies are not worth also 31.31 trillions.
Or how Toyota and Volkswagen Group are bigger than RDS since their cars run on gas.
A company can implement a blockchain solution with no coins, no value just like a database.
Not all blockchain solutions will have coins that will be traded on yobit.
The whole point of blockchain technology it is its decentralization.
If a company implements its own private blockchain, it won't differ from usual database with many backups on different servers.
I like it that you agree with me and not with the "detailed analysis' you have made.
Those 3.1t in market cap will not exist. Companies that implement the block chain as a solution won't inflate the market cap of coins as there is not going to be a coin in the first place, not even talking about a public traded one.
And if I dig deeper into this, let's assume as per your model shares will be replaced by tokens.
This doesn't mean wow, new tokens, new crypto.
It will still be Walmart and Boeing, not walmartcoin, and the value of those tokens will not have anything to do with the chaotic market we have now.