Because if you increase the blocksize to 1 TB, the blocksize will be too big for anyone to run a node except corporations:



As a result, Bitcoin would no longer be sovereign money, but a money subjected to what these corporations want to do with your transactions. The trust model is broken.

I don't care what satoshi wanted, all I know is I want to keep being able to validate my own transactions.

IOTA, Bitcoin Cash and all of these coins aren't decentralized. There is no such thing as cheap decentralization, unfortunately.