True unfair advantage for startup

I’ve a question - every startup founder (especially deep Tech) needs an unfair advantage to have a shot at success in fairly competitive or capital intensive areas: However I can’t think of true advantages except the following: 1. Extreme high skill in something very technical - however this often means you’re very niche 2. High network of friends and family and connections who will pick up your phone - and this means you don’t need VC money Things like Brand, network effect or just any tech only become real advantages over a long time for bigger players Thoughts?