Kann ein Pool mit 51% der Netzwerkgröße (Netspace) das komplette Netzwerk übernehmen?

Nein, lt. Chia Network soll das nicht möglich sein:
„Chia’s pooling protocol is designed where the blocks are farmed by individual farmer, but the pooling rewards go to the pool operator’s wallet. This ensures that even if a pool has 51% netspace, they would also need to control 51% of the farmer nodes to do any malicious activity. This will be very difficult unless 51% of farmers downloaded a malicious Chia client.“