If you are counting the hours and bringing up the subject of unpaid overtime, then the blog post isn't really directed at you. People get paid excellent money

If you are counting the hours and bringing up the subject of unpaid overtime, then the blog post isn't really directed at you. People get paid excellent money in big companies because they are able to get results out of all proportion to a employee that's thinking about pay-per-hour. They are think more about payback-per-project or results-per-strategy.