So many people have the notion that,

"It's just a private business, as long as it's following the laws, it can do whatever it wants."

...and following that, they might say,

"If you don't like it, don't work for them and don't buy their products or services!"

These statements are both true, and sensible, but at the same time, they don't exactly fit together. A business cannot be successful if it doesn't please the people who want to patronize it and does not treat employees the way that they want to be treated. Businesses "tend" to operate a popularity model. Whatever is most popular and accepted is what the business will do, usually trying to stay within the bounds of the law, while simultaneously trying to exploit its employees, providers/producers, affiliates, and even its customers to the point of maximizing profits as much as it possibly can. This is what I would consider the "natural" tendency of most businesses, particularly large scale ones.

If a business's purpose is to make as much money as possible (the money can be used for whatever), it's naturally going to cut corners where it can, and exploit whatever it can to maximize that goal. This often means that businesses will be willing to do questionable and wrong things, provided there is no law, rule, or voice speaking out against it. If there is no penalty for an action, the action is likely to remain the same.

Such things in the past have including extremely unsafe working conditions for factory workers, little to no sanitary requirements placed on meat-packing plants, employing children, some just barely old enough to be in school, forcing women to look and dress a certain way, having restricting weight requirements, forcing women to leave after getting married or reaching a certain age, discrimination against a worker's race, religion, age, sexual orientation, locking workers in the building to "make sure they got all their work done before leaving, low wages and salaries, and many others things.

Current business practices that are still legal, but under fire from people who protest them include outsourcing of jobs to foreign countries for cheaper labor, having extensive lines of cheap products made out of the country, limited insurance coverage and options for employees, owners using their businesses for political purposes and pressuring their employees to help them, negating or giving very little time for maternity/paternity leave, and refusing to hire people because of prison or criminal records.

The point I'm making here (mostly inspired from a YouTube comment thread I've been having with someone) is that Businesses are not constants, nor are they untouchable. Just because what a business is doing is legal doesn't automatically make the practice correct or good. I don't remember which logical fallacy this is an example of, but even so, it's obvious why saying that just because something is legal it therefor must be OK.

You don't have to patronize business that you don't like or disagree with the practices of. However, don't be afraid to question or challenge a business's practices, especially if it involves human rights issues.