Funding is just one (although quite steep to climb) obstacle you might encounter in your way to the market. I would like to reference another one they mentioned as there is a very important entrepreneurship lesson to learn there. Being a company in biochemistry, they needed labs: expensive and dedicated structures, not the kind listed on Rightmove! Instead of coping with their specific problem, they identified a potential market and they (very recently) founded NS Science, a commercial real estate company focused on providing labs and science facilities to businesses. I would like to stress the moral about "being entrepreneur" laying behind this example: they didn't just commercialise a service, but they shaped the need of a community. Now that their company is around, other people who have similar issues may feel the desire to produce something new thanks to NS Science's facilities. Even better: NS Science may inspire other people who put aside their ideas because of a lack of spaces, for instance. Let me give a final (rather famous) example of the "needs/desires creation" aspect of entrepreneurship: did you need iPads before they were invented? What changed apart from the invention of iPads itself? I believe that, after scratching the surface of possible answers, the outcome could be incredibly surprising.
(Thanks to Matthias, Simon and Marie-Sarah for comments and corrections)