Look at it from the perspective of government? If there is a technology which helps people evade taxes and I don't see any great impact of Bitcoin on the Economy and neither does banning it hampers my vote bank why shouldn't I ban it?
Your definition of economic growth is very much different from what me and most of the bitcoiners think. A self-sufficient individual who can spend his money with complete autonomy, can put complete trust in the money and transaction he made or received, no fear of confiscation or ban - for me this is the definition of Utopian Economy and bitcoin helping it achieve. Government and politicians are demeaning bitcoin only for their personal gains.
Fun Fact: Only 2.5% of the Indian population pay income tax and they taunt bitcoin for tax evasion.
They have already said blockchain is a technology that they surely want to adopt.
Remove cryptocurrency and what are we left with? Government have to understand that blockchain is only meant for finance. Storing medical records, government tenders, etc etc - those all bullshit serve no real purpose. The prime reason behind the success of bitcoin is the financial motive attach with it. People got a foolproof system in their hands which is controlled by no one, very-very difficult to mutate but still can be verified and trusted by anyone; these factors have created impeccable valuable intangible asset which no tangible asset could match.
All those who say standalone blockchain (without cryptocurrency) can change the world, bla bla - they actually have no idea how blockchain works. Blockchain is more than just adding data in chunks to a database.
2. When we say that formalized structure is impossible we actually are underestimating technology. I mean there was just one man or one team which created a legendary currency called Bitcoin. On the other hand we have the biggest brains of the country/World who have even been able to explore outer space. If they work upon such an idea I don't think it's that tough for them to place a formalized structure.
It's not about creating a formalized structure, it's about creating a formalized structure for Bitcoin. Otherwise, let alone biggest brains, even I can create a cryptocurrency with ecosystem which can only be traded on a single market, every transaction made will be recorded with complete details of sender and receiver, tax will automatically be calculated and deducted from user's wallet. But will the people adopt such cryptocurrency? I bet they won't! Bitcoin by its very nature is pseudo-anonymous and peer-to-peer. You don't even have to use Exchange, just create a transaction on your system, sign it with valid signature and broadcast it to the network. No matter how much anyone tries, you can't account for every transaction and create a so-called formal structure.
Moreover many investigative agencies have proved that it's not that difficult to trace out trail of your bitcoin so a couple of investigations by government would be enought to instill such a fear. Cash is Cash because it does not leaves a trail. Same cannot be said for cryptocurrencies.
I disagree. When you are using the word 'cryptocurrencies', you have brought the old players like Monero (XMR) into the talk as well. Unlike bitcoin, Monero provides insanely high level of privacy and anonymity by obfuscating the sender, amount and receiver. Even bitcoin is highly anonymous but requires higher technical know-how to maintain the privacy. And if anyone is able to trace someone through blockchain then bitcoin wallets are to be blamed which mix together various UTXOs of the user without user even realizing. If a user is concerned about his privacy, he should first learn the concept of UTXO and how bitcoin transaction works. Then, he should use a wallet which provides greater control over UTXOs and option to the user to manually select the UTXOs to be spent!