Though satellite internet has existed for years, the competition is about to rapidly intensify, with companies planning to launch thousands of their own systems into low Earth orbit. The latest move in the industry came on Tuesday from Amazon, which took a major step towards getting its $10 billion Kuiper constellation off the ground by sealing deals with three rocket companies. The US online retail giant wants to strengthen its lucrative diversification into IT services, and “provide low-latency broadband to a wide range of customers,” including those “working in locations without a reliable …