I'd actually flip it around - in a crowded market the last 80% of work on those 20% features is what makes you stand out.
It's the detail, the little touches, that result in the comparative advantage in the market - not the shared 80% ( most chairs have 4 legs, seat and back - that 80% isn't what you compete on ).
It's the detail, the little touches, that result in the comparative advantage in the market - not the shared 80% ( most chairs have 4 legs, seat and back - that 80% isn't what you compete on ).