Simple, because there are thousands of similar homes that buyers can look at as alternatives.

Whereas for things sold by major corporations, there often are not.

There's nothing else even remotely similar to a Cybertruck anywhere else.

When consumers can shop offerings from hundreds of different competing companies then there isn't really a power imbalance. If you don't like the terms with one, you can probably find terms you do like with another.

When there are only 5 manufacturers in the market, or 3, or just 1, that's where the power imbalance happens. Companies get to dictate terms because consumers have no real alternative.