The corporations track our every move on our computers and smart phones

[Nuclear Unicorn]

15. That doesn't improve the situation.

But the main distinction is: the government operates exclusively by threat of force.

A corporation data-mining is looking to improve its chances of having you patronize their business. If you decide you don't want to regardless of their solicitations then that settles the matter.

However, a government that indiscriminately sifts the lives of its citizens may decide it wishes to act on those that it finds displeasing. This can lead to regulatory harassment, undue legal proceedings (and the government can spend more on lawyers than you can) or even outright arrest.

And if the corporations ever did sink their fangs deep enough into the government they might then use those governmental powers that corporations normally lack to compel patronage even after you have decided to decline their goods and services. Who knows how far that could go? They might even use such powers to enforce something like insurance mandates!