What's the real difference in deployment speed between ready-to-use templates and building from scratch?

I’m trying to figure out if ready-to-use templates actually save meaningful time when it comes to deploying enterprise workflows. On the surface, they sound great—grab a template, customize it, done. But in my experience, every enterprise process is different enough that templates need significant tweaking anyway.

I’m evaluating a few platforms that offer pre-built templates for common automation patterns, and I want to understand the real math. If a template cuts your implementation time from weeks to days, that’s compelling. But if you spend three weeks getting the template to work with your actual data and processes, you’re back where you started.

For teams that have actually deployed templates at scale, how much customization are you really doing? Are templates a genuine head start, or do you end up rebuilding them to the point where you might as well have built from scratch? And how does that impact your overall ROI calculation when you’re justifying the platform investment?