Unless you're building SRO housing, it would be very hard to fit 10,000 people in a single "tower".

Le Lignon near Geneva, Switzerland, is one of the largest apartment complexes in the world by square footage, and it only houses ~6,500 people with ~900k sq. m of floor space across 28 hectares of land.

So you'd need something on the scale of Stuyvesant Town-Peter Cooper Village in Manhattan, which houses 25,000 people on 32 hectares. Maybe Google could build a Stuytown or two of their own at Moffett Field (400 hectares).