I think you're conflating a legal term with actual people, who do the existing, offering, and building. These people (who work under a legal entity with rights,

I think you're conflating a legal term with actual people, who do the existing, offering, and building. These people (who work under a legal entity with rights, protections, and regulations) pay taxes while they exchange their product or service for our dollars. The service can be anything people want or need. Grocery, clothing, book stores, bars, cafes, airlines... Ignore the "percentage off the top". Why is that a concern of yours? Do you not tip at restaurants or give to charity? Part of your gain can be someone else's. It's all voluntary in the free market. Not only are you free to not to give money to these corporations, you are free to start your own non-profit service, with a similar legal structure. You have to appeal to investors' altruism rather than their self-interest. A big challenge, but not outside the realm of possibility depending on the market you 'd like to cater to.