FIP : Reward the first provider if a customer they onboarded purchases from another provider

[reisepass]

Proposal: if a new customer makes their first purchase from provider A then later purchases from provider B in a different protocol we consider this an automatic network effect refferal and add 50% of the network fee paid to provider A's reward pool.

We want to encorage a strong network effect between differente providers and protocols in the network such that every marketing dollar spent has multiplicative outcomes. If providers get extra rewards for their customers purchasing from others they may even encourage them to do so with co-marketing campaigns. Providers may not be incentivized for customers to try other providers in the protocol they are competing in but in others they would lose nothing if one of their customers makes another purchase for a different service.