Even if you were to scope it just to software/SaaS product companies, there's minimally hundreds of these in the world and dozens of them have HN accounts. Most don't post on threads like this, so I feel the need to pipe up and say "This is quite doable, and done, much more than you might expect."
I run a small software company (two, technically). Products include Bingo Card Creator (http://www.bingocardcreator.com), Appointment Reminder (https://www.appointmentreminder.org), and occasional offerings for training for other software companies. I used to do consulting
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