I hear what you're saying, but for successful businesses in competitive spaces, those last 5% or even 1% are the sauce that sets your business apart from your competitors. Of course you won't know it is until you build it, but that's what quick mvp cycles and "lean startup" methodology is all about.
Exactly. So such a company should focus their effort on discovering that 1-5% edge and not waste effort going beyond 80% on things like hr/tooling/billing/etc that are irrelevant to (finding?) their value proposition.
