Not buying it. Visa,MC, traditional bank accounts can store the worlds transactions, but the blockchain can't?
Yes, because they're not storing thousands of copies of the data and transferring all the transactions thousands of times. The blockchain is highly redundant.
We have ~7000 nodes atm. 75Gbyte each. So each node needs a $50 dollar 1 Tbyte drive × 7000. 350,000 usd to store the data of a 10,000,000,000 usd system. Thats um.. 0.0035% and your telling me its to expensive?
Yes, that's fine now, because it's not storing worldwide microtransactions in that 75 GB. Worldwide microtransactions would balloon that blockchain millions of times that size. Try storing 75 PB on 7000+ nodes and see how expensive that is.
Even with 1000s more copies, the cost of storage is so insanely cheap in comparison to the overall value of the system. The cost of storage for paper bills and coins is something like 2-3% of the system, crypto is .004%.. Crypto's storage cost is basically zero. Banks storage costs are not in the computer systems, its in the brick and mortar store fronts, the employee's to talk to customers, the handling of paper bills, the advertising costs to gain new customers, etc. etc. Crypto has none of that bullshit, just transaction storage for virtually zero percent of the system.
It all scales together, people who have been following bitcoin since the beginning realize this.. The price used to be lower the blockchain used to be smaller... If bitcoin has a blockchain 100 times bigger, it has a price 100 times higher, and the percent of the system cost for storage is still the same. ~.004%.
If btc is 100 times bigger, blockchain size = 7500 Gbyte, price per coin= 70,000 USD, percent of system cost for storage ~.004%.
Back when I was mining in 2012 on gpu rigs the blockchain was like 5 gigs, and BTC were $5 each. Now they are both bigger. Storage just keeps getting cheaper (Moore's law), the blockchain keeps getting bigger and the value of BTC keeps getting higher.
There is a cap, I estimate a million peeps are using BTC on a regular basis, it can only get maybe 10,000 times bigger, (10 billion peeps using it *the whole planet*). By the time we have the whole planet using BTC, I imagine Moore's law will have created big enough storage systems for cheap enough that we can have millions of copies of the blockchain.