We’re all subsidizing Bezos, if you want something to complain about.
Are we? Because buying from a company is not the same as subsidizing the part-owner. You are not subsidizing Piggly Wiggly (or whatever the grocery store you guys have in your neck of the woods - rural areas around here often have Piggly Wiggly) either when you shop there.
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Of course we are. We are subsidizing any employer who pays employees so poorly that they must supplement their income by food stamps, Medicaid, and other poverty relief measures. We are subsidizing them by increased number of children who need to go to subsidized daycares, Head Start programs, be in Medicaid, or free lunch programs, etc.
That's religious catechism, not economic reasoning. If a guy does not have the skill set to increase any employer's revenue enough to cover the cost of supporting himself and his family, he has a problem. When an employer buys the guy's labor at fair market value, she's solving part of his problem for him. If you solve part of somebody's problem, that does not magically make his whole problem your problem. You might as well claim his food stamps are a subsidy to his grocer because the grocer doesn't sell him $500 worth of food for the $200 he can earn himself.
We also are subsidizing all corporations by building infrastructure: roads, water and sewer, utilities, etc.
Corporations pay corporate income taxes that help finance that infrastructure. You haven't shown the tax revenue is less than the cost of providing the service.
We are especially subsidizing corporations every single time they are given tax breaks when they decide to build another store or warehouse in any community.
Corporations, like most other economic actors, shed positive externalities that they don't get paid for into their economic ecosystems by the boatload. The reason local governments offer tax breaks is because they want those externalities. That's only a subsidy if the externalities are insufficient to make up for the lost tax revenue, i.e., if the local government officials made a bad deal. Local officials are sometimes stupid or corrupt, sure, but often they offer tax breaks because it's a good deal for their community.
We are subsidizing them by allowing mega corporations such as Amazon and Walmart to underpay their suppliers and by cornering the market after they’ve drive out more local retailers —at which point they are free to charges they want and supply what they choose. When people have few choices about where and what they can buy because other options have been eliminated, we have helped create that situation by subsidizing corporations that do not, in fact, need the subsidies to survive or thrive.
This is off the top of my head.

Overall, Amazon and Walmart have increased people's choices enormously.