Here’s the thing - being bigger makes this much harder
Software is about vision - we learn methodologies and make all sorts of tools to enable collaboration, but one skilled and driven dev is always going to outperform a large team
It’s a lot like painting murals. If you’re making something big, you might want some helpers, but the painter is the guy with the vision, working on all the fine details. A few skilled people who have worked together for a long time might be able to do it together and you can make a design around the idea of collaboration, but generally you’re going to get clashing styles