Free speech sites generally don't have much money. For one thing, major corporations won't advertise with them or support them, because they are afraid of being 'tainted' by the opinions expressed there. For another, such sites are deliberately inhibited and marginalized by the big players on the Internet such as Google.

One answer is for such sites to open their own store and sell their own products directly, following the model established by Alex Jones and Infowars. I've noticed more and more sites with conservative or nationalistic viewpoints doing this. Maybe Voat needs to open a Voat Store. The world is waiting for a T-shirt with a goat on the front of it.