Delivery Led or Sales Led Redux

About two years ago I had pondered over the question of who is a better leader for business. Is it someone rooted in delivery and operations or someone with a sales background (

I think for a business to really grow, the leader has to be sales led. Having a sales oriented leader is all the more critical when the organization is in the business of service delivery. Perhaps in a products business where the product is evolving, a delivery oriented leader who is entrenched in product development and vision of the product might be better. But in most cases, it makes sense for the business to be sales led.