Here's the formula for a creating a super successful startup, and the outline of a story that can easily secure funding:
(a) emerging technology that only recently became available
(b) clear customer problem
(c) easy-to-use solution
(d) multibillion dollar market
(e) team that has domain experience with the technology and the market
Note that (b)-(e) are a function of (a). Maybe the right way to approach startups is to find a new emerging technology, plug it in for (a), and try to solve for a product idea that satisfies (b)-(e). If you don't succeed solving the formula, repeat with a different technology.