One way is to try to sell big enterprise contracts to big banks. This is really hard for startups to do, unless you have a product you know they really want, have deep connections or experience selling to banks, and have all the compliance and security requirements in place.
Another way to try this is to sell to smaller sites. They're more likely to adopt quickly, but you'll need to make sure that you maintain quality, are generating enough traffic and conversions to be worthwhile after the rev share, and don't devolve into something that appears scammy.
Do you know who actually wants what you are building? How have you figured that out?