You and I know Block size upgrades alone are not the ideal way to scale aggressively.
Satoshi disagreed.
Satoshi was not perfect and if you speak to the developers that worked on the Bitcoin code after Satoshi left, they would have told you that his
coding was sloppy and messy. Yes, Satoshi though about almost everything, but the scaling for mainstream adoption was flawed. If you simply
increase the Block size, you would not scale to the volume of tx's that are being done by competitors like VISA & MasterCard & PayPal.
With much bigger Block sizes comes additional risks too.