Also, I hate to break it to you, but your homes are spinning around the earth's axis once a day (at the same rate as a geosynchronous satellite, in fact!)

Anyway, Starlink wants to scale up to 42,000 satellites. I can't imagine that's anywhere close to the maximum number that could fit in their altitude range. After all, if arranged in a grid, that's just ~ 200 x 200 satellites. The earth's surface area is many orders of magnitude larger than that, and the satellites are occupying a larger (and much thicker) orbital shell.