I've been and to a large extent am one of those in some cases and I can't imagine not using version control, or code sharing, or modularity. I also backup my c

I've been and to a large extent am one of those in some cases and I can't imagine not using version control, or code sharing, or modularity. I also backup my code in several locations across thousands of miles of earth and ocean. Look, "Founder only mode" is when the practices of these large corporations with lots of people depending on them are the most valuable, because everything depends on you. There aren't other people who can fill in and do your job. You have to be able to do it all. You can't skimp on any of the areas just because you're just you. Not if you expect anyone to depend on you, including yourself 6 months later when you have no idea what the code you wrote there does anymore. And you don't want to have to repeat yourself all over the place so you modularize. That's how it's done at the big shops too. It's good practice.