Not really? The r&d isn't expensive because these are legacy/old type chips. There isn't much r&d happening. They're made using old processes. Any r&d is like

Not really? The r&d isn't expensive because these are legacy/old type chips. There isn't much r&d happening. They're made using old processes. Any r&d is likely using different materials. Military stuff often uses different materials for specific applications. The profits come from raising yields, which is much easier on older nodes.