Overall, having only one CA in the trusted root folder of a PC can create a single point of failure, limit flexibility, increase the potential attack surface, and limit the support for legacy systems. It also puts the trust of the PC on a single vendor which may not be reliable in the long term. | Overall, having only one CA in the trusted root folder of a PC can create a single point of failure, limit flexibility, increase the potential attack surface, and limit the support for legacy systems. It also puts the trust of the PC on a single vendor which may not be reliable in the long term. |