I used to think that way too. For years. Until I realized that's never been how labor is valued. Ever. Let's dispense with this fantasy.
There's also a disconnect. Very few people value what they buy in stores this way. We don't care what it cost to manufacture what we buy. We just care what other stores sell it for. If all the other stores are selling it cheaper, then this store is charging more than it's worth.
People pay for product. People pay for services. To first order the pricing model is the same.
And of course as another commenter said: Try starting your own business and earning 150k. I bet 95% of readers here are incapable of it.
Ignore unicorn startups and listen to How I Built This. It's quite common that for several years the founders earn little. All they have is equity they can't liquidate. For years they have to pay employees a lot more than they themselves make and give them employee rights that they themselves don't have.
If you look across all businesses in the US, earning 150k puts you better off than 90% of business owners. The deck is in favor of employees, not business owners.