Linus Torvalds built Git in 10 days – and never imagined it would last 20 years
zdnet.com
zdnet.com
1) Identify and resonate deeply with developer issues (like Git, Linux)
2) Focus on executing a usable product in a very short time
So combined it's a really potent ability. If he had the personality he'd probably be a really great founder, but he has chosen to open source all his stuff.