Marc Andreessen Co-Founder and General Partner Andreessen Horowitz, investor and Co- Founder Netscape
“ what correlates the most to success -- team, product, or market? Or, more bluntly, what causes success?
 I'll assert that market is the most important factor in a startup's success or failure.
Why? In a great market -- a market with lots of real potential customers -- the market pulls product out of the startup.
The market needs to be fulfilled and the market will be fulfilled, by the first viable product that comes along.
The product doesn't need to be great; it just has to basically work. And, the market doesn't care how good the team is, as long as the team can produce that viable product.
 Conversely, in a terrible market, you can have the best product in the world and an absolutely killer team, and it doesn't matter -- you're going to fail.
 You can obviously screw up a great market -- and that has been done, and not infrequently -- but assuming the team is baseline competent and the product is fundamentally acceptable, a great market will tend to equal success and a poor market will tend to equal failure. Market matters most.
And neither a stellar team nor a fantastic product will redeem a bad market.” Marc Andreessen, “The Pmarca Guide to Startups, part 4: The only thing that matters, June 25, 2007; http://web.archive.org/web/20070701074943/http://blog.pmarca.com/2007/06/the-pmarca-gu-2.html