From a personal point of view, I completely disagree here. The one-person thing is just not doable, no matter how hard you believe/try. I've attempted this countless times and my motivation and dedication never cut it, no matter how hard I push. It's an inhumane amount of work for a single person to handle. And there is one specific moment that I've been able to pin-point every single time. I end up making a ton of progress: bootstrapping a development environment, databases, frameworks, containers, yada, yada, yada, I end up building a tons of things and just as I feel extremely happy and motivated, I take a step back and suddenly I see how many small details I need to fix up, as well as how much stuff there is still to be done and how much more would pop up to fix, polish and clear up and even a small project ends up feeling like infinity and depression and frustration kicks in. In my experience having at least one other person is at least a good frustration and prevention mechanism. That said, finding someone who's on board is equally hard.