> Where is the difference that would allow us to condemn the companies for maximizing profits by use labor laws but not condemn them for maximizing profits using tax laws?
Money isn't people.
Money isn't people.
It is not, however, a company's responsibility to build highways, or to figure out how to finance the building of said highways, or to set up and fund public education, or to hire and pay police, is the point. When it becomes a company's responsibility to do so, we march gleefully into one of several dystopian cyberpunk science fictions (pick your favorite) ;)
For example, Google takes advantage of government contracts and grants, paid for by taxes. They also take advantage of the highway, city, water, power, education, housing, copyright and trademark laws, unemployment insurance, and legal (that is, the court system) infrastructure largely built and paid for (directly, by grants, or subsidies) using taxes.
You choose how to spend your time and if you spend it earning an income then you're taxed to pay for the other things that let society function so that you can do so. How much you earn in a given time is irrelevant.