[apinstein]

Competition isn't bad. Markets are huge, don't let that part scare you.

However, two-sided market startups are very, very hard. Unless your business model works before having a liquid market form, you're probably doomed. Especially as a 1-man startup, it just sounds crazy. The thing with 2-sided market business is that the more you succeed, the more you have to grow the business, and it's usually not profitable at first.

Unless you're willing to get external funding and be in it for the long-haul and be OK with a largely binary outcome in terms of success (complete failure or big success), this is the type of business scenario I'd advise against being the best place to apply your efforts.