I think folks miss the point when thinking about 10x devs. The point is that there are some folks out there that can do the work of entire teams or entire companies.

When you have a team you have hours long sync meetings, communication lag, and middle managers. A single capable individual doesn't need any of that.

The tradeoff is that the resulting code might be unmaintainable in practice. Minecraft is a great example. Notch wrote the complete game largely by himself (with one or two other folks), but now that it's managed by a team and owned by a megacorp, it's effectively rewritten. With 100x more people is it 100x better? Probably not