Heat and Chemical resistant Silicone Rubber Ahead to Silicone 11. GE made silicones. But they were not very practical in insulating small motors. These practical concepts will help you understand why silicones did NOT become dominant in wire insulation.
Useful materials posess a balance of properties suitable to the task.
Silicone rubber failed as insulation because it cut readily and was porous to gases and water. Well, GE now knows silicones will not serve the wire coating industry. But perhaps we have an ideal waterproofing material here. Maybe we can use it to cover roofs. Work in groups of three and develop a list of chemical and physical properties that you would require in a practical roofing material.