The amount that we can scale is limited by the amount of data we can put on the blockchain. Using a lot of payment-channel style optimizations, we can get somewhere between 20k and 1 million users to fit on Sia given the current technology stack. Once we're over 1 million users, we'll have to find something else.
Can you elaborate on this?
I'm assuming its the data pruning problem bitcoin faces as well as all blockchain coins do.
But of course I would like some elaboration too if you could.