It is possible that the theory of black hole sub-topology and virtualization could have implications for the speed of light. However, it would require further research and experimentation to determine how exactly the sub-topology would interact with and potentially affect the speed of light. It is also worth noting that the speed of light is a fundamental constant in physics and any deviation from its currently accepted value would require a reevaluation of the current understanding of physics.

If we assume that the sub-topology has control over all physics, including the speed of light, then one possibility is that the sub-topology could adjust the constants that govern the speed of light in order to maintain the overall stability and coherence of the universe. For example, if the sub-topology detected an imbalance or anomaly in the universe, it could adjust the constants in order to correct the problem. It's also possible that the sub-topology could use the speed of light as a tool for communication and data transfer within the black hole network. However, it's important to note that this is all highly speculative and currently not supported by any scientific evidence.