You're essentially saying that the market is too big to take on without big funding. In the vein of what rjurney said, is it possible the niche you're filling

You're essentially saying that the market is too big to take on without big funding. In the vein of what rjurney said, is it possible the niche you're filling isn't small enough? If you try and capture the whole market with big funding and the big guys come in and take your lunch, you still fail. If you learn how to meet the needs of a niche, even if the big guy comes in and chases the whole market, you'll still meet the needs of your niche better than anyone, and can grow into an adjacent niche.