While some are so focused on the negative possibilities wth Amazon, the below article really gets at a strong point, that point being while Amazon may only be projecting 50K jobs within 10-20 yeara, given the rate it's growing, it's also just as possible that Amazon could exceed (even significantly) their 50K jobs projection in a much shorter time frame...
https://www.google.com/amp/s/amp.bus...ir-city-2018-8
"When Amazon relocated its headquarters to Seattle's South Lake Union in 2010, the company was far from the behemoth it is today.
City planners estimated that the company's 1.6 million square feet of office space would bring around 6,000 new employees to the area - a number that has since risen to around 45,000."