You need a standard so you can use lights and music players from different vendors at the same time. You also need a standard to ensure future devices that don'

You need a standard so you can use lights and music players from different vendors at the same time. You also need a standard to ensure future devices that don't yet exist also work with your smart home. A third reason: a new upstart can't easily gain traction in the smart home space without a standard to quickly interoperate with existing smart devices.