As a Pittsburgher living in Seattle for the past few years, hearing this gives me hope. I know NIMBY isn't the best philosophy, but I make an exception for Amazon, who I think has done a number on Seattle and its culture.
There are technologies that exist that allow more than a handful of people to live on a given unit of land.
Some people think that Chinese investment in real estate is also to blame but I’ve never seen any data that actually suggests that. Still, Seattle won’t pass rules to prevent speculation on property because at the end of the day, voters just want their property values to keep going up more than they want to live in a livable city for everyone