> First, the entire financial system can and will be made digital
It already is.
> making every dollar you deal with every day a digital asset that can falls under blockchain
That is a very bold statement.
> Then, you have all online goods: (…)
Those all suffer from the exact same problem than physical assets, they exist and have a purpose outside the blockchain. You already have the oracle problem.
> credibly neutral and publicly interoperable accounting
This is again a very bold statement and facts disagree with you. Blockchains are not interoperable with one another and cannot be, for starters.
> which could one day be 50% of the world economy
This is pure wishful speculation on your part and is based on absolutely nothing.
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EDIT: I found "TAM"'s expansion: total addressable market.
Likewise, in-game items and other digital assets can exist in or outside of a blockchain. They can serve their original purpose when on-chain as well. I can expand on my point about interoperability:
Blockchains are not typically natively interoperable between them (exception might be rollups), but all assets on a blockchain are. If I create a video game and tokenize my items + currency, I suddenly open up a world of possibilities for users and developers to expand on whatever in-game functionality I can make with my limited team, like:
- Making items tradable on DEXs - Borrowing and lending services - New UIs and tracking tools - Clubs and clans that verify ownership - Derivatives and staking
In a world with tokenized assets, I could easily make a deal with a guy on the internet to let him stay in my decentraland property for 3 weeks in exchange for a ticket to a digital Marshmello concert - completely trustlessly and transactionally.
Sure, plenty of the mentioned items can run more efficiently on a centralized database but the question then becomes, “whose centralized database?” Blockchain is the only solution that provides credibly neutral and publicly interoperable accounting of digital assets, which could one day be 50% of the world economy.