The risk management strategy of 'accepting' a risk is appropriate when the cost of implementing safeguards is greater than the potential loss or when resources are insufficient to address the risk. Hence, the startup may decide to accept the risk for non-critical systems while focusing resources on more critical assets. Mitigation involves implementing steps to reduce the risk, which may not be feasible due to the startup's budget constraints. Avoidance would involve stopping an activity that is too risky, which does not apply since the systems are still in use. Lastly, transferring the risk typically involves shifting the potential cost to another party through insurance or contracts, which is not mentioned as an approach in the current scenario.