Everything is dependent on your market. To paraphrase Dharmesh Shah, "enterprise products are sold, not bought." Part of that selling process is making sure prospects know you exist, and understand the value you provide. Cold calls are one way to do that. Not a very cost effective (or effective) way to do it, but still one way.

Personal example: today I got a cold call from a guy who runs a shop that produces short video interviews with companies and their customers. Their product looks awesome, but they're so small and I new I probably would have never found them otherwise. We'll probably use them.

On the other hand, if we do it, that'll be the second cold-call product I will have purchased in 10 years running this business.