What happens if we cut it in half?
The collateral gets halved
The reward gets halved
Expenses remain the same
Wouldn't expenses double ? For a given holding, you've got to run twice the number of nodes for the same return.
No, because in essence a pro linux sys admin with semi-ninja skills can run 2 or more MN's from the same server.
Though the point still stands for the majority at this point.
Relying on ninja skills - that's a centralisation issue. There are only so many ninja's in the world, and you need 3000 or more.
Plus, you're looking to load transactions onto servers at a mass payment scale. you wouldn't want to share servers.