So far Synthfoods isn't doing anything to really support either side, they're content to simply grow their Synthpaste and create food rations rather than get involved, why should they? They profit from selling food to both Liberty and Rheinland which isn't illegal as it can be counted as Humanitarian Goods. Plus the war will end eventually, why would Rheinland alienate a possible 'in' on the Liberty markets that isn't hostile to them?