This is extract from Waves White Paper:
"In a PoS system each node that holds a balance in the main network token has a chance
(proportional to its balance) to produce a block. In the two-tier architecture it is logical to move
payment processing onto the full nodes alone. At the same time, all nodes with non-zero balances
still have to be eligible for staking rewards."

does it say that zero balance node holder will be paid or I don't get here something?