@cjd @Hyolobrika
Here is Satoshi giving instructions on how to increase the block size in the future via hard-fork, since the 1MB limit was supposed to be temporary (the original hard limit was 32MB with 1MB soft limit if I recall correctly, but it was removed early on since the network was still new)
https://bitcointalk.org/index.php?topic=1347.msg15366#msg15366

Here is Mike Hearn corroborating what I'm saying, in which Satoshi emails him directly and makes direct comparisons to Visa/Mastercard/PayPal and how Bitcoin can already scale better than them: https://bitcointalk.org/index.php?topic=149668.msg1596879#msg1596879