why open-source erp?

I am trying to create a way to measure the effectiveness of a module/feature in our open-source erp module..We would like to create ERP features/modules as the majority of SMEs needed, instead of targeting highly customized big business org specific ERPs. The idea is to open-source a majority of the routine business processes along with sharing them. We believe the openness in business process would actually encourage and improve the focus of organizations on  core-product/core-scientific innovation, instead of short-term optimization strategies.