Why should companies invest in Sales Operations?

Strategy needs to be updated as what was good yesterday might not be so today.American "to good to fail" companies were running in losses because there was departmentalization i.e. working in silos. The Sales team would sell the product and wouldn't bother weather proper service is given to the client. Thus, there is over promising and under delivery.

 I believe Sales operations is a supply hain approach where the employees work as a team. They do a proper homework on the product to perform better operations and while selling understand the need of the clients properly. The person who pitched the product is the one delivering the service the customer is satisfied. Also, less cost to run one team rather that two departments. The workforce becomes multitasking and are ready to face more challenges. Thus, a firm must have a Sales Operations team where everyone knows everyones job.