> why isn't there a company that provides payment services that offers expensive software in return for a proportion of revenue? I can think of few reasons: 0

> why isn't there a company that provides payment services that offers expensive software in return for a proportion of revenue? I can think of few reasons: 0. For small to medium size companies this will be a financial logistics nightmare. Sending portion of your revenue to some other country will be difficult. 1. For larger companies, they will just pay rather than doing the revenue dance. 2. Companies that pay expect first class support, they will not pay for ad-hoc support system. Providing timely and quality software support is very hard.