No wallet outside of Inc is anywhere remotely close to 33%. Furthermore my understanding on the protocol such an attack would not take the network down or create malicious blocks since there are 3 committees and a recovery mode on timeout/stall.
I am strongly opposed to node rewards as it brings in a whole new set of game theory issues. People will run nodes for monetary gain, not for the Algorand network. They will pool, they will act in their best interest to convince governor’s to make the rewards permanent, they will do whatever they can for their business of rewards, regardless of what is best for Algorand. They will become xgovs, they will market to convince others. Their incentives do not align with the good of Algorand and they centralize over time.