The car, TV, washer, and whatever humanoid robot finds product market fit physically need to be in my house, or close to it, in order for them to be useful to me. Thanks to the Internet, the data center doesn't need to be, like at all. Economy of scale says that renting a slice of time on the most expensive GPU supercomputer out there is going to be faster and also probably cheaper since I'd only be getting a slice while the server is serving multiple users.