>> Starlink is also going to be seeing competition in the coming years thanks to companies like OneWeb and Telesat, which plans to create smaller constellations that will offer service by 2021. Tech giants like Amazon and Samsung have also announced plans to deploy their own constellations, which would consist of 3,236 to 4600 broadband satellites, respectively.
SpaceX has a huge advantage in launch costs here. Mass produced satellites will be lower cost per unit than most others, and launching on used rockets will give them the cheapest deployment costs ever. And they are the only company that can reuse rockets today. I don't see the competitors really having a chance.