#1 is not false. They say: > their capacity is largely fixed... Bitcoin has an estimated maximum of 7 transactions per second vs 24,000 for visa Yes, Bitcoin

#1 is not false. They say: > their capacity is largely fixed... Bitcoin has an estimated maximum of 7 transactions per second vs 24,000 for visa Yes, Bitcoin could raise their artificial transaction cap. But they haven't recently, despite fees and delays getting quite large. So clearly there are significant difficulties in increasing the throughput meaningfully, and it is unclear how high it can go. To a user used to pre-existing transaction mechanisms, that's a "largely fixed" capacity.