I have a couple of objections to that: - These companies aren't monolithic. If you object to say Google's monopoly on advertising, you can take a job on a team

I have a couple of objections to that: - These companies aren't monolithic. If you object to say Google's monopoly on advertising, you can take a job on a team that has nothing to do with it, like image compression. - If you disagree with the company's practices, you might have more impact by changing the company from within than trying to compete with it.