B2B2C marketplaces - especially ones that don't charge the "B2B" users, but take a cut of each transaction, and empower users to encourage transactions through

B2B2C marketplaces - especially ones that don't charge the "B2B" users, but take a cut of each transaction, and empower users to encourage transactions through a customized instance of the platform - are a fascinating "final boss level" for this mindset. Your user is not your buyer, but they can be a distributed salesforce. You need to growth-hack not only for your penetration at the B2B level, but to give them the tools they need to growth-hack their own B2C client bases, with your product at the forefront. That's a lot to build as a founding team, and occasionally it can be like herding cats - but it can be incredibly lucrative, because you have an incredibly low barrier to entry at the B2B level, but every account naturally scales with value delivered to the end customer.