[eppp]

Perhaps they didn't want to build it themselves and took into account the other risks like the company folding?

[echelon]

Or the cost being 10x'd after they come to depend on it.

That certainly hasn't ever happened to us before.

Every external { tool, vendor, SaaS, platform } is a potential risk. You don't want to eat a year of unplanned costs and a quarter or more of engineering hours of migrating off.