While that's true for science payloads, when it comes to commercial satellites, there are a handful of 'busses' that form the core of the vast majority of satel

While that's true for science payloads, when it comes to commercial satellites, there are a handful of 'busses' that form the core of the vast majority of satellites. https://en.wikipedia.org/wiki/Satellite_bus https://en.wikipedia.org/wiki/Satellite_bus