> you shouldn't write code until you know someone is willing to buy
This is kind of a weird line to see in a thread where people are talking about coding for the joy of the craft. Also makes me think about where we would be if everyone who contributed to OSS projects over the years thought this way. And to be clear, I'm not shunning or criticizing, having this mindset is totally fine and I'm sure it does well for you personally.
Yeah it's just a totally different thing than what the thread starter was talking about.
This may be good advice for bootstrapping a business (though personally I feel like people who do this are being pretty hostile to their customers by pretending something exists when it doesn't at all, which is not to say it isn't effective) but it is just irrelevant to someone wanting to build something for themselves.
you shouldn't write code until you know someone is willing to buy
i'd say somewhere between 20 < n < 100 for B2B makes sense, rather than 1000