The article discusses what Sun Microsystems got wrong, with the author reflecting on their time at the company and identifying a lack of interest in the mechanics of running a business as a key issue. This is illustrated by an anecdote about a startup that was unable to get Sun to sell them hardware despite using Sun's open-source software. The author notes that this experience was in contrast to their dealings with Dell, which was more responsive and efficient. The article concludes by highlighting the importance of learning from the successes and failures of other companies.