Read the stories of successful startups and, if the founders are willing to be honest, you will see this pattern over and over again. They started out as digital cash for PDAs, but evolved into online payments for eBay. They started building BASIC interpreters, but evolved into the world's largest operating systems monopoly. They were shocked to discover their online games company was actually a photo-sharing site.
It's easy for people to dismiss other people's startups. The haters love to hate on startups of all kinds. For techies, it's almost a favorite pastime.
But you gotta be in the game and be willing to change and evolve. So cut the hate, and get in the game.