Startup Blindspots from Quora

I recently ran across this Quora post that spread like wildfire through entrepreneurial circles, discussing common startup blindspots. I liked it so much I wanted to pluck out the best part to share with you.

An idea is not a design
A design is not a prototype
A prototype is not a program
A program is not a product
A product is not a business
A business is not profits
Profits are not an exit
And an exit is not happiness.

What common startup blindspots do you see?