Hello Bitcoin Folks!

I am working on a p2p trading platform that lets you trade altcoins, including small cap coins too. This is our goal at least.

We're facing some resistance with marketing in mainstream platforms like reddit, twitter, youtube.
It seems that none of these sites want anything to do with us unless we have a minimum 10K ad spend per quarter.
The problem is that we're still in prototype stage and don't even know if we're targeting the right audience.

What is the best option in this case? Should we just bite the bullet and try it out, or should we continue community building?
Community building has been going fine so far, but the results we are seeing are .... just not significant enough. It's growing linearly, its a grind but maybe this is the way it's supposed to be.

I would love to hear some thoughts, is someone has tried something similar.
Are we doomed or is there hope in this product?

Thanks!