How many are self-employed in the United States? No one knows for sure, but estimates range around 20 million. Add to this millions of small businesses, and you have a huge pool of workers who run their businesses on personal computers. Dentists, handymen, shop owners, yoga instructors, lawyers ... all require reliable, easy-to-use computers for their work.
Should they use Linux?
Here's my take as someone who has run his one-person business on Linux for several years. I'll be objective. This is not a promotional piece. Let's state up front that I have an advantage over many business Linux users because I'm an IT professional. Yet we all depend on business Linux.