> Bitcoin Cash is fast and as low fees but if it manages to scale to something like a Visa network number of transactions, it will be centralized
This just isn't true. Today's commodity hardware can already process gigabyte blocks[1], which corresponds to approximately 3000 tx/s globally. In addition, Moore's and Nielsen's laws will bring down the cost of cpu power and bandwidth, and will enable terrabyte-sized blocks within the next decade or two - all while still running on commodity hardware.
A big problem is latency even today anything above 3s is unacceptable for mining, half of miners are not validating blocks before starting to mine because it takes to "long", miners spy on other miners and then try to mine empty blocks, Bitcoin doesn't have a lot of orphan blocks today because mining is centralised in China, do you think increasing the block size will help with any of these problems?
One thing is to test on a controlled environment another completely diferent thing is to test on real world.
This was a highly contrived test - an interesting point to note is that they don't talk about how long it would take new nodes to perform an initial sync if there were weeks / months / years worth of gigablocks in the chain.
This just isn't true. Today's commodity hardware can already process gigabyte blocks[1], which corresponds to approximately 3000 tx/s globally. In addition, Moore's and Nielsen's laws will bring down the cost of cpu power and bandwidth, and will enable terrabyte-sized blocks within the next decade or two - all while still running on commodity hardware.
[1] https://news.bitcoin.com/gigablock-testnet-researchers-mine-...