Biggest challenge that startups face?

[The Raven]

Well, I believe it comes from lack of research. They would like to start something and earn money however they didn't check their competitors. You have to look at location of your business. If you have similar company nearby, that's a big no no. If not, you need to find a good place for your business, a good location. If you just pick random stuff that are best for you but not customers, you will fail.