Cause a 2TB drive is so cheap? People wanting to run a full node can easily afford it. But if BTC stays with small blocks and becomes a settlement layer, nobody will even care about running a node in the first place. Why would I want to run a node to validate payments between corporations?

Increasing blocks increases the load on nodes somewhat, but it keeps the system much more peer to peer, as transaction fees won't end up as high.

There's no obvious easy solution, but making the network expensive and congested is certainly not a real solution.