Startup Failure Rates — The Real Numbers
smallbiztrends.com
smallbiztrends.com
And while the sample set probably includes very few (if any) software-based tech companies, I think there are more similarities than differences between the struggles encountered by two kids starting a tech company and two kids opening up a skateboard shop - bad hires, cash flow problems, finding customers, etc.
What am I not seeing?
I'm not sure this is super relevant to YC get-rich-quickr's. Built-to-flip startups have a different lifecycle than small businesses in general; a small (read: "real") business grows more conservatively and lasts longer, and a flipper actually works to shutter itself early (on favorable terms).
The "breadth" of the company has nothing to do with it. The question is how sustainable the company is as a business. You can trade long-term sustainability for short-term marketability --- Cisco and Google will love you for it, because they don't care about your business infrastructure (they're firing your director of finance as soon as they buy you) and they want your product to be maximally useful.
On the other hand, if you miss the big acquirers and you're a flipper, you die; if you build a business, you get repeated shots at being attractive to them down the road.
Built-to-flip startups are a special class of company who avoid most of the work of distribution, promotion, sales, and billing in favor of maximizing the investment value of their product. Again: if they thread the needle and sell that package to Cisco, they win. If they miss, they die.
I don't understand why you draw this arbitrary distinction between paying someone a fraction of your future cash flows (through stock) versus paying them a stream of cash.