I don't really agree with the first part. The world is packed with startup founders who are obstinately cranking away on ideas years after it's become obvious to everyone that it will never work.
Things that increase the small chance of success are addressable market size, timing, founder track record, and product-market fit. I agree with you on available capital since it enables teams to pivot multiple times, try things that might not work, and scale quickly at massive deficits by undercutting competitors and spending heavily on marketing.
This is why I quoted "resourceful" because this is not intelligence or anything quantifiable. Success has almost nothing to do with intelligence, if intelligence can even be precisely defined. I remember the CEO of Redhat quoting that he decided to do a startup because he thought he was not intelligent enough for working.
"Resourceful" is switching plans and finding a way to make it work.
Addressable market and market fit changes as startup evolves. And founder track record only works because of network connections , VCs trusting you with money and the founder already being rich.
As with everything hamfisting money into startup increases it's chances. Uber for dog walking? electric scooters?
What's the saying.. When the wind blows hard enough, even chickens can fly.
Things that increase the small chance of success are addressable market size, timing, founder track record, and product-market fit. I agree with you on available capital since it enables teams to pivot multiple times, try things that might not work, and scale quickly at massive deficits by undercutting competitors and spending heavily on marketing.