The reason these things don't threaten the livelihoods of the other laborers is that they are not good substitutes for what they displace. Since I think free software is a good substitute for proprietary software most of the time, I think it is a threat to the livelihoods of many proprietary software developers, and the business of their employers. Maybe Allchin doesn't think free software is a good substitute for proprietary software, so he thinks it's not a threat.
Competition is an aid to an industry.
The bottom line of a monopolist who can extract monopoly prices is still better than the bottom line of a competitor who produces a great product. I don't understand how you can say both of those things. The profession of scribe used to be a lucrative trade. It won't take the closed source industry out of business. And do not say, I will study when I Temp.